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Technical Data Sheet
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12637787 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12637787: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include end_item_identification: NSN 2320-016525208. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-564-7875, 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
12637787
NSN: 5330-01-564-7875
NIINs: 015647875, 016788533
FSC: 5330 — Packing and Gasket Materials
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
end_item_identificationNSN 2320-016525208
NSN5330-01-564-7875
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12637787 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
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REFERENCE DATA AND LITERATURE: TX00-108 PAGES 0-155 AND 0-156
TECHNICAL CHARACTERISTICS
REFERENCE DATA AND LITERATURETX00-108 PAGES 0-155 AND 0-156
PART NAME ASSIGNED BY CONTROLLING AGENCYLEFT HAND ENGINE CYLINDER HEAD GASKET GRADE A
END ITEM IDENTIFICATIONASM-6.6L V8 DIESEL ENGINE CYLINDER HEAD
SUBSTITUTES & CROSS-REFERENCES 1
98030631Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 12637787?
12637787 is a GASKET.
What parts can replace 12637787?
There is 1 known substitute for 12637787: 98030631. Substitute compatibility should be verified for your specific system.
What is the NSN for 12637787?
12637787 is cataloged in the U.S. Government catalog under NSN 5330-01-564-7875. This indicates validated use in U.S. government and defense supply chains.
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