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 SILICONE CLASS Q, temp_rating: -85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF, hardness_rating: 50.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.066 INCHES NOMINAL IN, center_hole_diameter: 0.920 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 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 5331-00-436-7107, 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
25C85-21
NSN:5331-00-436-7107 FSC:5331 — O-RING CAGE:72914 — GRIMES AEROSPACE COMPANY (USA)
SPECIFICATIONS
material
RUBBER SILICONE CLASS Q
temp_rating
-85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF
hardness_rating
50.0 SHORE DUROMETER A NOMINAL
outside_diameter
1.066 INCHES NOMINAL IN
center_hole_diameter
0.920 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN
cross-sectional_height
0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN
5331-00-436-7107
COMPONENT DIAGRAM
KEY FEATURES
•
CENTER HOLE DIAMETER: 0.920 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 SHORE DUROMETER A NOMINAL
•
TEMP RATING: -85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER SILICONE CLASS Q
•
OUTSIDE DIAMETER: 1.066 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is 25C85-21?
25C85-21 is a O-RING.
What parts can replace 25C85-21?
There are 11 known substitutes for 25C85-21: ARP568-021MILG23652 TY2, AS3581CP, ARP568-021MILG23652 TY2CP and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25C85-21?
25C85-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-436-7107. This indicates validated use in U.S. government and defense supply chains.
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