Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER ETHYLENE-PROPYLENE CLASS EPM, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL, outside_diameter: 6.897 INCHES MINIMUM AND 6.989 INCHES MAXIMUM IN, center_hole_diameter: 6.714 INCHES MINIMUM AND 6.760 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-192-6623, 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.
WHERE IT FITS
SR721-80-166
NSN:5331-01-192-6623 FSC:5331 — O-RING CAGE:95272 — STILLMAN SEAL CORPORATION DIV STILLMAN SEAL CORPERATION (USA)
SPECIFICATIONS
material
RUBBER ETHYLENE-PROPYLENE CLASS EPM
hardness_rating
80.0 SHORE DUROMETER A NOMINAL
outside_diameter
6.897 INCHES MINIMUM AND 6.989 INCHES MAXIMUM IN
center_hole_diameter
6.714 INCHES MINIMUM AND 6.760 INCHES MAXIMUM IN
cross-sectional_height
0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
NSN
5331-01-192-6623
COMPONENT DIAGRAM
KEY FEATURES
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL
•
OUTSIDE DIAMETER: 6.897 INCHES MINIMUM AND 6.989 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 6.714 INCHES MINIMUM AND 6.760 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is SR721-80-166?
SR721-80-166 is a O-RING.
What parts can replace SR721-80-166?
There are 25 known substitutes for SR721-80-166: NAS1611-129, 5331PL2182391, NAS1613 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SR721-80-166?
SR721-80-166 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-192-6623. This indicates validated use in U.S. government and defense supply chains.
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