Size & Model: AS-155 NBR O-rings, 4" ID × 3/32" CS / 3.987" ID × 0.103" CS; AS568 standard size for repeatable fit and replacement use.
NBR 70A Material: Made of Buna-N nitrile rubber with 70A durometer, balancing flexibility, compression and sealing performance for general repair work.
Sealing Performance: Helps resist water, petroleum-based oils, grease and general wear; suitable for faucet, valve, pump, fitting and maintenance sealing.
Application by Size: This medium cs / extra large id size is recommended for large filter canisters, pump covers, valve housings, equipment access covers and maintenance sealing.
Package & Use Notes: Includes 1 Pack black O-rings. Clean the groove before installation. Not recommended for steam, brake fluid, strong acids, strong alkali or long-term outdoor ozone exposure.
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For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.
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