Protect Threads and Ports
Help prevent contamination and damage during manufacturing, shipping and storage.
Protect hydraulic fittings, hoses, ports and components from contamination, damage, abrasion and fluid loss. Caplugs offers thousands of standard solutions that are in stock and ready to ship, along with custom molding capabilities for specialized hydraulic applications.
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Damaged hydraulic fittings and downtime costs money. Protect hydraulic components with high-quality protection built to safeguard during shipping and installation, as well as parts that stay on the equipment and function in demanding in-field environments. Parts are also ideal for use during fleet MRO.
As a leader in plastic, vinyl and rubber molding, Caplugs provides standard and custom protection for hydraulic fittings, hoses, ports and components. As a member of the National Fluid Power Association (NFPA) and The Association for Hose and Accessories Distribution (NAHAD), Caplugs is a trusted source for hydraulic fitting protection, hose protection and maintenance solutions. With three domestic manufacturing facilities and thousands of in-stock and ready-to-ship standard parts, Caplugs helps protect critical components when you need it.
Do not risk your components and equipment to lesser-quality protection.
Proud member of leading fluid power and hose industry associations
Let us help you onshore your plastic components and product protection. With 3 U.S. manufacturing facilities, we can help.
Help prevent contamination and damage during manufacturing, shipping and storage.
Reduce abrasion, bending stress and exposure in demanding operating environments.
Use Safe-Sleeve products to help contain hydraulic fluid in the event of a hose burst.
Temporarily seal hoses and pipes to help retain fluids and block debris during service.
Shop standard products designed to protect hydraulic threads, fittings, hoses and fluid systems during manufacturing, shipping, operation, maintenance and repair.
Protect external threads and hydraulic fittings during manufacturing, storage and shipment.
Shop Threaded Caps
Seal and protect internal threads, ports and hydraulic openings from dirt, moisture and damage.
Shop Threaded Plugs
Protect hydraulic hoses and cable bundles from abrasion, impact and exposure in demanding environments.
Shop Spiral Hose Guards
Protect and bundle hydraulic hoses while supporting abrasion resistance and burst containment.
Shop Protective Sleeves
Temporarily seal hoses and pipes during maintenance while helping retain fluids and block debris.
Shop PTSP Service Plugs
Protect pipe ends and threads from impact, moisture and contamination during storage and shipment.
Shop Pipe Caps
Protect flange faces, bolt holes and connection surfaces during manufacturing, handling and transportation.
Shop Flange Covers
Mask hydraulic threads, ports and critical surfaces during painting, powder coating, plating and finishing.
Shop Masking ProductsAbrasion, repeated movement, UV exposure and harsh operating conditions can shorten hydraulics hose life. Caplugs offers spiral wraps, sleeves, bend restrictors and hose-management products designed to protect individual hoses and bundles.
Caplugs combines the Safeplast™ and Pig’s Tail™ product lines to provide a broad selection of standard products, specialty wraps and complementary hose-protection solutions.
Hydraulic fittings and ports can be vulnerable to thread damage, dirt, moisture and other contaminants during manufacturing, shipping, storage and assembly. Caplugs offers a broad range of caps and plugs designed to protect critical connection points and help keep hydraulic systems clean and ready for use.
Standard solutions are available for common hydraulic fitting and thread configurations, including SAE, NPT, JIC, UN/UNS, metric, British Standard and flared or flareless connections.
Review Caplugs products associated with commonly referenced MIL and NAS hydraulic protection specifications.
| Spec Number | Part |
|---|---|
| NAS 831 | EC, SEC |
| NAS 832 | CD |
| NAS 833 | PD |
| NAS 834 | T |
| NAS 835 | ASC |
| NAS 836 | ASP |
| NAS 837 | EP, SEP |
| NAS 840 | P-38B Only |
| NAS 842 | ADP |
| NAS 843 | K |
| NAS 844 | SC |
| SAE AS85049/138 | AS138 |
Confirm current specification and application requirements with a Caplugs product expert before ordering.
When a standard product is close but does not fully meet your requirements, Caplugs may be able to modify an existing part. For specialized fit, material or performance needs, our team can also develop a fully custom molded component.
Your solution may start with one of Caplugs’ standard catalog parts and be customized to fit your exact needs. Available modification options include:
Using existing tooling or Caplugs’ interchangeable mold base system can help reduce tooling costs, shorten tooling turnaround and support scalability as volume requirements increase.
When a new design or tool is required, Caplugs’ experienced engineers apply design for manufacturability principles to develop a component for the application. Support includes design, material selection, rapid prototyping, in-house tooling, production, assembly, packaging and logistics support.
Explore catalogs and product guides for hydraulic fitting protection, hose protection and maintenance products.
Hydraulic fittings and ports can be protected with threaded caps, threaded plugs, push-in plugs, flange protectors, hose caps and other application-specific closures. The correct solution depends on the fitting type, thread standard, material and stage of use.
Caplugs offers products for common hydraulic fitting and thread configurations, including SAE, NPT, JIC, UN/UNS, metric, British Standard and flared or flareless fittings. Availability varies by product series and size.
Hose guards, spiral wraps, sleeves and bend restrictors help shield hydraulic hoses from abrasion, impact, repeated bending and environmental exposure. Reducing this wear can help extend hose service life and decrease avoidable maintenance.
PTSP industrial service plugs temporarily seal open hydraulic hoses and pipes during maintenance and repair. They help retain residual oils and other fluids, reduce leakage and protect open channels from dust and debris.
Yes. Caplugs can modify standard catalog parts or develop fully custom molded components for specialized hydraulic fittings, ports, hoses and equipment. Custom support can include material selection, design, prototyping, tooling, production, assembly and packaging.
Free samples are available for many standard Caplugs products so you can evaluate fit and performance. Availability varies by product. PTSP industrial service plugs are not available as samples.
Shop thousands of standard products, request samples for fit testing or work with Caplugs to develop a custom solution for your hydraulic application.
