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 ISOBUTYLENE-ISOPRENE CLASS IIR, outside_diameter: 1.441 INCHES NOMINAL IN, center_hole_diameter: 1.290 INCHES MINIMUM AND 1.312 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 under NSN 5331-01-148-8215, 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
9521 PIECE 25A BUT4L
NSN:5331-01-148-8215 FSC:5331 — O-RING CAGE:01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
material
RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
outside_diameter
1.441 INCHES NOMINAL IN
center_hole_diameter
1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
cross-sectional_height
0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN
5331-01-148-8215
COMPONENT DIAGRAM
KEY FEATURES
•
OUTSIDE DIAMETER: 1.441 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
MATERIAL: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
•
CENTER HOLE DIAMETER: 1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is 9521 PIECE 25A BUT4L?
9521 PIECE 25A BUT4L is a O-RING.
What parts can replace 9521 PIECE 25A BUT4L?
There are 16 known substitutes for 9521 PIECE 25A BUT4L: AS568-027, AMS7271, AMS3209 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9521 PIECE 25A BUT4L?
9521 PIECE 25A BUT4L is cataloged in the Federal Logistics Information System under NSN 5331-01-148-8215. This indicates validated use in U.S. government and defense supply chains.
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