Protective Rubber End Caps
Moulded rubber end caps, plugs, and sleeves designed to seal and protect pipe ends, exposed tubes, shafts, and threaded bolt ends from dust, moisture, and impact damage. At Sarthak Industries, we manufacture highly flexible protective caps.
Technical Specifications
| Elastomer Polymers | EPDM, Neoprene (CR), Nitrile (NBR), Silicone, PVC/Vinyl |
| Hardness Range | 50 Shore A to 70 Shore A (flexible stretch-fit) |
| Temperature Limits | -40°C to +150°C (Silicone masking caps rated up to +250°C) |
| Shape Options | Round, Square, Rectangular, Tapered Plugs, Threaded Caps, Pull-Tab Caps |
| Standard Wall Thickness | 1.5mm to 6.0mm depending on size and impact resistance needed |
Material Selection Guide
Choosing the right rubber polymer compound is essential to ensure longevity and prevent seals from failing under pressure.
EPDM Caps
Exceptional weather, UV, and ozone resistance. Best choice for outdoor pipe caps, metal construction tubes, and solar racking.
Nitrile (NBR) Caps
Excellent grease and oil resistance. Ideal for capping hydraulic tubing, automotive grease fittings, and transmission shafts.
Silicone Caps
High-temperature resistance. Excellent reusable plugs for masking bolt holes during paint lines, powder coating, and plating.
Neoprene (CR) Caps
Good flame retardancy and weather aging resistance. Recommended for marine cable ends and coastal pipe sealing caps.
Applications & Custom Capabilities
- Transit Protection: Shields expensive threaded shafts, flanges, and machined pipe ends during shipment.
- Stretch Friction Fit: Compound engineered to stretch up to 10% to slide on easily and lock securely without clamps.
- Visual Color-Coding: Custom colored caps (yellow, red, blue, green) to categorize tube sizing on busy assembly floors.
- Internal Ribbing: Optional molded inner ribs or threads to ensure a secure, shake-free lock on smooth metal surfaces.
Request a Quote for End Caps
We supply bulk volumes and custom shapes with rapid turnaround times.