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4637-36-677-0020 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4637-36-677-0020: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, center_hole_diameter: 129.5 MILLIMETERS NOMINAL MM, cross-sectional_height: 3.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-424-1993, 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
4637-36-677-0020
NSN: 5331-01-424-1993
FSC: 5331 — O-ring
CAGE: S3531 — TRELLEBORG ERSMARK AB (SWE)
SPECIFICATIONS
materialRUBBER
hardness_rating70.0 SHORE DUROMETER A NOMINAL
center_hole_diameter129.5 MILLIMETERS NOMINAL MM
cross-sectional_height3.0 MILLIMETERS NOMINAL MM
NSN5331-01-424-1993
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4637-36-677-0020 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: 3.0 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 129.5 MILLIMETERS NOMINAL MM
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT3.0 MILLIMETERS NOMINAL MM
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER129.5 MILLIMETERS NOMINAL MM
MATERIALRUBBER
SUBSTITUTES & CROSS-REFERENCES 4
2152 2101-438Reference document
Same NSN cross-reference
Reference document — Secondary reference
21-10608 ITEM 22Reference document
Same NSN cross-reference
Reference document — Secondary reference
463736Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
471-5939Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4637-36-677-0020?
4637-36-677-0020 is a O-RING.
What parts can replace 4637-36-677-0020?
There are 4 known substitutes for 4637-36-677-0020: 2152 2101-438, 21-10608 ITEM 22, 463736 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4637-36-677-0020?
4637-36-677-0020 is cataloged in the U.S. Government catalog under NSN 5331-01-424-1993. This indicates validated use in U.S. government and defense supply chains.
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