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6966538 ITEM 4 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6966538 ITEM 4: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 90.0 SHORE DUROMETER A NOMINAL, center_hole_diameter: 0.902 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN, cross-sectional_height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN, end_item_identification: COOLER;WHIDBEY ISLAND CLASS LSD. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-516-0931, 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
6966538 ITEM 4
NSN: 5331-01-516-0931
FSC: 5331 — O-ring
CAGE: 1U214 — AIR & GAS TECH INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating90.0 SHORE DUROMETER A NOMINAL
center_hole_diameter0.902 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
cross-sectional_height0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
end_item_identificationCOOLER;WHIDBEY ISLAND CLASS LSD
NSN5331-01-516-0931
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6966538 ITEM 4 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: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 0.902 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER0.902 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONCOOLER;WHIDBEY ISLAND CLASS LSD
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 2
2-317&N0552-90Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
262-6966538 ITEM 4Reference 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
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FREQUENTLY ASKED QUESTIONS
What is 6966538 ITEM 4?
6966538 ITEM 4 is a O-RING.
What parts can replace 6966538 ITEM 4?
There are 2 known substitutes for 6966538 ITEM 4: 2-317&N0552-90, 262-6966538 ITEM 4. Substitute compatibility should be verified for your specific system.
What is the NSN for 6966538 ITEM 4?
6966538 ITEM 4 is cataloged in the U.S. Government catalog under NSN 5331-01-516-0931. This indicates validated use in U.S. government and defense supply chains.
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