This section provides an overview for protective caps as well as their applications and principles. Also, please take a look at the list of 89 protective cap manufacturers and their company rankings.
Table of Contents
A protective cap is a cap that is placed over or inserted into sharp-edged and dangerous wires, round bars, pipes, bolts, nuts, threads, connectors, cables, etc.
A protective cap is used to prevent foreign matter, dust, rust, cut surfaces, and injuries.
They are available in a wide variety of materials, such as silicon, polyethylene, and polyvinyl chloride (PVC) resin, colors, hole sizes, and thicknesses, and are also available in luminescent, square, and hexagonal types.
There are various types such as round tip type, square type, screw head type for hexagonal bolts, etc., so you can choose the one that best fits your application.
Protective caps are used in a wide range of fields, such as automobiles, industry, and construction, to protect the ends of various wires, cables, steel pipes, and connectors, and to protect protruding parts.
and to prevent injury.
Specific examples of use are as follows:
When selecting protective caps, it is necessary to select a material that is suitable for the application, considering the characteristics required for the location where it will be used, such as durability, heat resistance, chemical resistance, electrical insulation, and oil resistance.
Soft PVC (polyvinyl chloride), also called PVC or vinyl chloride, is a material often used for screw caps, etc. because it is easy to fit and remove and does not tear easily.
It has excellent electrical insulation, oil resistance, chemical resistance, cold resistance, abrasion resistance, aging resistance, and flexibility.
With a heat resistance temperature of 220°C, silicone has excellent heat resistance and almost no change in properties even when exposed to ultraviolet rays and wind and rain outdoors.
A wide variety of caps are made in various colors.
Although its heat resistance is inferior to silicone, the greatest advantage of inexpensive EPDM (ethylene propylene diene rubber) is its excellent weather resistance. It also has excellent ozone resistance, aging resistance, and solvent resistance. Since its oil resistance is inferior, it is not suitable for environments where oil will stick to it.
Polyethylene, which is attacked by strong acids but is durable against alkalis, can be used intermittently from -60°C to 90°C and is often used for pipe caps and pipe thread caps.
When selecting a size, use a cap 1mm smaller than the diameter of the cap to prevent it from falling out.
*Including some distributors, etc.
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Viega has a history of over 120 years and is based in Broomfield, Colorado. Viega is a developer and producer of hardware and industrial tools and pipe fitting technology. Viega’s equipment specializes in materials such as copper, stainless, polymer, lead bronze, and cupronickel. Some of Viega’s product listings include elbows, tees, adapters, flanges, caps, unions, couplings, reducers, branch connectors, tubing, manifolds, stub-outs, closet adapters, outlet boxes, press sleeves, closet risers, ballcock nuts, fasteners, sealing elements and gaskets.
Suncor Stainless, Inc. is based in Plymouth, Massachusetts. Suncor Stainless serves the industrial, marine, architectural, commercial, government, and OEM markets as a manufacturer of stainless steel hardware and components. Suncor Stainless is ISO 9001:2015 certified. Suncor Stainless’s services include custom stainless steel manufacturing, product testing and quality assurance, strength testing, metal content testing, custom webbing, custom stainless steal chain assemblies, custom threading, machine swaging, corrosion resistance testing, and retail packaging. Suncor Stainless also supplies numerous components such as sheaves, hooks, and clips.
OneMonroe was founded in the 1920s and is located in Rochester Hills, Michigan. OneMonroe is an ISO 9001:2015 and AS9100D certified global industrial manufacturing company serving several types of customers including manufacturers, distributors and catalog-houses across several vertical markets including aerospace/defense, automotive, medical, and transportation. Product lines include adjustable handles, bearings, casters, gaskets, hydraulic clamping, military spec hinges, molded rubber, piano hinges, pins, pull handles, quick release pins, seals, springs, toggle clamps, and various harnesses. Custom manufacturing is also available to meet specific customer needs.
Morris Coupling is a family-owned company that was founded in 1941 and is headquartered in Erie, Pennsylvania. Morris is a manufacturer of compression coupling and components for pneumatic conveying and industrial vacuum systems. Morris Coupling has additional manufacturing facilities in Tennessee and Georgia, as well as distribution centers in Mexico, Europe, and Asia for international customers. Morris Coupling 7 product lines include couplings, flex hose, bends, and installation components. Most products are available in multiple configurations.
Mädler North America was founded in 2020 as the US-based subsidiary of Mädler which was founded in Berlin, Germany in 1882. Mädler specializes in manufacturing precision-made machine parts. Product lines include linear guides, bearings, bushes, bevel gears, worm wheels, castors and wheel systems, couplings, fastening elements, clutches, gear boxes, idlers, linear bearings, locking assemblies, machine mounts, elements for pneumatic machines various joints, rubber padding and dampers, splined shafts and hubs, sprockets, timing belts, spindles, adhesives, sealants, and other assorted accessories.
Larsen Packaging Products is headquartered in Saint Charles, Illinois. Larsen Packaging Products manufactures and distributes packaging products. Larsen Packaging Products box manufacturing techniques include high speed 2 color rotary die-cutter, high speed 2 color mini flexo/gluer, 2 color flexo/folder/glouer, high speed gluing, stiching, in-line taping, jumbo lineal feeed press, and specialty folder gluing. Box offerings include custom boxes based on standard and e-commerce designs such as self-erecting sex corner tray, full telescope design style container, half slotted container, and more.
Klein Tools is a fifth-generation family-run producer of hand tools founded in 187 and headquartered in Lincolnshire, Illinois. Klein Tools sells worldwide directly and through distributors. Klein Tools has a family of companies under its brand including Alco, Civitella, Mumme Tools, Tulmex, and Wattmaster. Klein Tools serves several industries including construction, HVAC/R, plumbing, telecom, municipal, and industrial. Some of the tools Klein Tools produces include non-contact voltage tester bens, multi-bit screwdrivers, digital circuit breaker finders, advanced circuit tracer kits, and multi-bit electronics screwdrivers.
Keystone Electronics Corp. has a 70 year history and is headquartered in New Hyde Park, New York. Keystone is a global manufacturer of precision electronic components and hardware. Keystone is ISO 9001:2015 certified. Keystone offers several types of products including battery & coin cell holders, contacts, && clips, fuse clips & fuse holders, handles for instrumentation, metal key-pad dome switches, multi-purpose hardware, PC board hardware, plugs, pins, jacks, sockets, quick-fit terminals, screw terminals, terminal blocks, screws, spacers, standoffs, terminals, terminal boards, test points, tips, probes, jumpers, and clips. Keystone also offers custom manufacturing capabilities including stamping, machining, assembly, tool room, and quality assurance.
J.W. Winco was originally founded as Ganter in 1894 in Germany. Winco specializes in parts manufacturing. Parts offerings the operating parts segment including handles, adjusting, and positioning parts; clamping parts segment featuring tensioning, clamping, switching, and levers; and finally the machine parts segment with indexing, locking, mounting, connecting elements, guides, spindles, rollers, magnets, casters, and wheels. Winco’s complete catalog contains over 75,000 standard parts. Winco is also ISO 9001 certified. Winco offers free CAD downloads and technical documentation for many arts.
Alpha Packaging, Inc. was founded in 187 and is headquartered in Greenwood, Arkansas. Alpha Packaging is a producer of custom packaging materials. Alpha Packaging offers custom services including custom packaging, custom foam and package filling, as well as custom printing. Product offerings include box foam inserts, corrugated boxes of various flute profiles, die cut boxes, corrugated plastic shipping boxes, mailer boxes, and heavy duty shipping boxes. Box foam inserts include anti-static foam, and foam pouches, rolls, and edge protectors. Plastic shipping boxes include numerous options such as reusable, tamper-resistant, and shock-resistant. Mailer boxes include boxes, tubes, envelopes, and packing list envelopes.
Wharton Hardware and Supply is a family-operated business that was founded in 1948 in Philadelphia, Pennsylvania and has branched to several locations across the United States. Wharton operates in 3 segments: products, sales & rental, and services. The products segment includes road & bridge concrete accessories, safety equipment, abrasives and cutting tool products, plumbing-related products, topological products, fasteners, bits and drill equipment, as well as power tools. The sales & rental segment offers heavy duty construction equipment from major brands. The services segment includes repair and testing for tools and equipment.
SC Fastening Systems hailing from Macedonia, OH is an industrial and construction supply distributer that provides value-added services. Product lines include fasteners, concrete anchors, abrasives, cutting tools, safety, janitorial, welding, paints and chemicals, material handling, tools and equipment, electrical, hydraulics and pneumatics, and lifting and rigging. Additionally, SC Fastening Systems offers specialty parts for niche industries such as laundry chute parts and custom hinges. SC Fastening Systems also offers services including inventory management and supply chain solutions, modified parts, kitting, assembly and special packaging, and fire protection products and services.
Hi-Tech Fasteners (HTF) was founded in 1988 and headquartered in Frederick, Maryland. HTF is a distributor of hardware components. HTF offers products in four product types: self-clinching fasteners such as studs and nuts, general fasteners & hardware, inserts, and components. HTF also offers a full line of PEM® Brand products including fasteners for metal sheets and panels, fasteners for BC boards and other non-ductile material, insert for plastics, bonding fasteners, rivet nuts, and fastener installation equipment.
Colonial TelTek was founded in 1972 and operates in King of Prussia, Pennsylvania. Colonial TelTek is a division of Colonial Electric Supplies. Colonial TelTek primarily serves the telecommunications and utility industries as a parts distributor and emergency service provider. Colonial TelTek is offers 8 major product lines including aerial hardware components, bridge conduit systems and conduit accessories, fiber optic cable and splice accessories, handholes and racking products, pulling products, PVC, HDPE, and fiberglass conduit, as well as tools and accessories.
Custom Gasket Manufacturing is based in Englewood Cliffs, New Jersey. Custom Gasket serves several industries such as power generation, lighting, transportation, water & air filtration, food processing, pump & valve, electronics, cryogenic equipment, oil & gas, construction, agriculture, pharmaceutical, pulp & paper, HVAC, as well as others including OEMs. Custom Gasket Manufacturing produces many types of custom products including rubber elbows, rubber diaphragms, insulators, seals, extrusions, and as per their namesake, gaskets. Custom Gasket also offers rubber extrusion, die cutting, rubber molding, water jet cutting, laser cutting, and flash cutting services.
Solar Biz Inc. began in the 1970s in Ft. Atkinson, Wisconson. Solar Biz offers complete solar panel systems for residential and commercial customers ranging from under 5 watts to over 400 watts. Systems include solar panel components with racking and mounting, inverters, power centers, solar charge controllers, batteries, and accessories, AC and DC enclosures, circuit protection, hydro and wind generators and accessories, water pumps and water filtering, tanks, heaters, hot tubs, rain catchments, and appliances such as fans, gas ranges, refrigerators and freezers.
Orr & Orr, Inc. has been offering wholesale distribution services since 1934 out of Bedford Park, IL. Orr & Orr emphasizes speed of order processing, shipping, and both customer and distributor satisfaction. Product categories that Orr & Orr offers include air conditioners, brake controls, cargo restraint equipment, door tracks, lighting equipment, fans, gas springs, heating equipment, hinges, plumbing supplies, seat belts, steps, toolboxes, hitch and towing products, various truck hardware, cables, battery products, safety equipment, and spring latches.
N.T. Ruddock Company was founded in 1951 and is located in Cleveland, Ohio. N. T. Ruddock is ISO 9001:2015 registered and is a distributor off industrial equipment. Product lines include blast cleaning abrasives, equipment and replacement parts, primary and secondary aluminum ingot, aluminum and copper master alloys, and pure metals. Abrasive options include glass beads, corn cob, crushed glass, steel shot, copper slag, and more. Metal options include aluminum alloys, aluminum master alloys, copper master alloys, ferro alloys, alloy additions, and beryllium alloys. Additionally, N.T. Ruddock also sells many types of parts such as nozzles, guns, and valves, in addition to larger equipment such as blast cabinets and blast pots. NT. Ruddock offers installation, cleaning, repair, custom bagging, and in-house blending of abrasives, and repair.
Kinequip, Inc. was founded in 1946 in Buffalo, NY as a distributor of industrial parts, accessories, and kits. Today these offerings have grown to include motors, compressors, blower systems, clams, pumps, various fittings, gauges, and sensors, as well as pneumatic and high-pressure devices. Kinequip also serves as a distributor for individual device and parts manufacturers. Kinequip additionally offers custom-designed solutions ranging from R&D to unique components and special-made parts, as well as value added designs on demand.
Hybrid Electronics is a global distribution specialist of electronic components, with access to over 50 million unique components. Among the markets HE serves are the aerospace, automotive, communications, defense, industrial, medical, national security, and test & measurement industries. In addition to components, HE also provides quality and compliance testing, counterfeit detection, upscreening, and other forms of quality control. Examples of component subtypes that HE offers include ICs, batteries, capacitors, semiconductor products, sensors, circuit protection, interconnectors, filters, optoelectronics, relays, switches, power supplies, and cables and cable assemblies.
Broner Glove and Safety has served customers since 1933 and is based in Auburn Hills, Michigan. Broner is a safety service provider as well as distributor of safety equipment. Broner’s safety equipment offerings include first aid emergency response equipment, ergonomic assisting tools, eye protection, fall protection, hearing protection, instrumentation, plant and site safety equipment, welding-use protection, respiratory protection, protective apparel and more. Safety services include glove testing, plant surveys, safety glass programs, respiratory fit testing, and transaction analysis among others.
WAGO was founded in Minden in 1951 in then West Germany. WAGO manufacturers components for the automotive, digital lant, elevator and escalator, energy, intralogistics, lighting, marine & offshore, mechanical engineering, and railway systems industries. WAGO produces, electrical interconnections such as rail mount terminal blocks, wire connectors, PCB interconnects, pluggable connection systems, panel feedthrough connections, and EMC shielding. Other types of products include relays, protection devices, fieldbus couplers, ethernet switches, touch panels, edge devices, and wireless devices.
Saddle Brook Controls is a division of Ribble Engineering, which was founded in 1933 in Saddle Brook, New Jersey. Saddle Brook Controls is a manufacture as well as a designer, distributor, and support service provider of automation solutions for factory automation. Product groups include PLCs, controllers, Remote IO devices, HMIs, industrial computers, machine vision and inspection machines, motion devices, drives, motor controls, enclosures, circuit breakers, safety products, sensing and control products, power supplies, and UPS.
Pepperl+Fuchs, Inc. was founded in Mannheim, Germany in 1945 developing the forerunner of the proximity switch. Pepperl+Fuchs continues to develop proximity sensors as well as other industrial sensors including ultrasonic sensors, rotary encoders, positioning systems, display and signal processing, vibration monitoring, industrial communication, and signal processing as well as related accessories and software. Explosive protection products include safety barriers, surge protection, wireless solutions, HMI systems, power supplies, electrical explosion protection equipment, level measurement, and related software.
FLSmidth is based in Copenhagen, Denmark. FLSmidth is a full flowsheet technology and service supplier to the global mining and cement industries. FLSmidth’s services reduce customer costs and environmental impact while improving performance. FLSmidth’s mining solutions include maximizing lithium production, reduce water usage, enhance wear resistance, improve flotation efficiency, and reducing downtime. FLSmidth’s services include online condition monitoring services, feeding and dosing equipment services, electrical and automation audits, gas analysis and emissions monitoring services, service aggrements for MAAG Gear Units, and gravity concentrator services, audits, and training.
ifm efector (ifm) is a subsidiary of ifm electronic, founded in Germany in 1969. ifm has developed, manufactured and marketed sensors and controls technology to industries that include assembly and robotics, automotive, material handling, metal forming, mobile equipment, plastics, and food and beverage. Ifm produces sensors, condition monitoring equipment, image processing, safety technology, industrial communication, IO-link, systems for mobile machines, displays, software, connection technology, voltage supplies, as well as other accessories.
Associated Bag is headquartered in Harrisburg, Pennsylvania. Associated Bag is a bag and shipping product distributor with 4 distribution centers across the United States. Associated Bag Products include anti-rust & anti corrosion bags, boxes, bubble & cushioning, business envelopes & mailers, dispensary products, document & media protectors, eco-friendly products, food service & packaging, gloves, industrial & shipping supplies, janitorial supplies, liners & covers, personal protection, retail packaging, sealed air, tapes & adhesives, ties & sealers, tools & equipment, tubing, VCI products, vinyl, zipper bags, and more.
ABB Electrification Canada is a subsidiary of industrial giant, ABB. ABB Electrification serves the data center solutions, oil, gas & chemicals, food & beverage, railway, infrastructure, and microgrids industries with solutions such as smart industry, E-mobility, smart living, smart power, smart cities, and smart distribution. Products include control systems, power electronics, UPS and power conditioning, industrial software, PLPC automation, robotics, power converters and inverters, medium voltage products, metallurgy products, control room solutions, and motors and generators.
Essentra Components is a producer of plastic injection moulded, vinyl dip moulded, and metal components, operating in 29 countries across 4 continents. Essentra Component has a catalog of over 45,000 products. These range from caps, plugs, wire & cable management, flange protection, knobs, handles & grips, access hardware, PCB, and electronics hardware. Essentra Component offers free samples of CADs of standard parts for assist customers in creating custom-manufacture red solutions, including prototyping and 3D printing.
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