Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
The RETAINER,PACKING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-171-5885, indicating validated use in U.S. government and defense logistics supply chains.
Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.
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FREQUENTLY ASKED QUESTIONS
What is 21820 FN 55?
21820 FN 55 is a RETAINER,PACKING.
What parts can replace 21820 FN 55?
There are 32 known substitutes for 21820 FN 55: 411267, S37X12, P115 and 29 more. Substitute compatibility should be verified for your specific system.
Is 21820 FN 55 still available?
21820 FN 55 is currently cancelled.
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