EC21x5 Rubber End Cover Plug Seal 21mm OD 5mm Width Nitrile Coated Steel End Cap

EC21x5 Rubber End Cover Plug Seal 21mm OD x 5mm Width Pack of 1
✔️ Steel Core Nitrile Coated Shaft End Cap Seal

This pack of 1 EC21x5 rubber end cover plug seal is made to close off housing bores and prevent a shaft from passing through the wall. With a steel body and nitrile rubber outer layer, it helps protect bearings and internal components from dirt, moisture, and grease loss.

✅ Pack size: 1 end cover plug seal
✅ Model: EC21x5
✅ Outside diameter: 21mm
✅ Width: 5mm
✅ Material: steel core with nitrile rubber coating
✅ Seal material: Nitrile Butadiene Rubber
✅ Designed to block shaft openings in housings
✅ Temperature range: -40°F to 248°F
✅ Helps retain lubricant and prevent contamination

Dimensions (mm)

Outer Diameter Width
21 5

💡 How does a nitrile coated steel end cover plug improve housing sealing performance in rotating assemblies?
It works by combining rigidity with flexible sealing contact:

• Steel core maintains dimensional stability under press fit

• Nitrile rubber creates tight interference seal against bore

• Prevents grease leakage from unused shaft openings

• Blocks dust and moisture from entering bearing cavities

If you need a clean way to seal off a housing and protect internal parts, this EC21x5 plug gets it done without hassle.