PartsTable
Technical Data Sheet
Download PDF

S8990-521P — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

S8990-521P: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, center_hole_diameter: 0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN, cross-sectional_height: 0.347 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-809-0782, 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
S8990-521P
NSN: 5331-00-809-0782
FSC: 5331 — O-ring
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
materialRUBBER
center_hole_diameter0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
cross-sectional_height0.347 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
NSN5331-00-809-0782
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S8990-521P MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.347 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.347 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
MATERIALRUBBER
SUBSTITUTES & CROSS-REFERENCES 1
S8990-521Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy S8990-521P?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is S8990-521P?
S8990-521P is a O-RING.
What parts can replace S8990-521P?
There is 1 known substitute for S8990-521P: S8990-521. Substitute compatibility should be verified for your specific system.
What is the NSN for S8990-521P?
S8990-521P is cataloged in the U.S. Government catalog under NSN 5331-00-809-0782. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — S8990-521P