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8637A — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8637A: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: PAPER OVERALL, hole_diameter: 0.212 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 5.250 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.587 INCHES NOMINAL IN, bolt_circle_diameter: 4.337 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-499-5599, 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
8637A
NSN: 5330-00-499-5599
FSC: 5330 — Packing and Gasket Materials
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialPAPER OVERALL
hole_diameter0.212 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter5.250 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.587 INCHES NOMINAL IN
bolt_hole_quantity3
bolt_circle_diameter4.337 INCHES NOMINAL IN
cross-sectional_thickness0.016 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-499-5599
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8637A 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 THICKNESS: 0.016 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 5.250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.587 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 3
•
BOLT CIRCLE DIAMETER: 4.337 INCHES NOMINAL IN
•
MATERIAL: PAPER OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER5.250 INCHES NOMINAL IN
APERTURE DIAMETER3.587 INCHES NOMINAL IN
BOLT HOLE QUANTITY3
BOLT CIRCLE DIAMETER4.337 INCHES NOMINAL IN
MATERIALPAPER OVERALL
HOLE DIAMETER0.212 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
K8637ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8637A?
8637A is a GASKET.
What parts can replace 8637A?
There is 1 known substitute for 8637A: K8637A. Substitute compatibility should be verified for your specific system.
What is the NSN for 8637A?
8637A is cataloged in the U.S. Government catalog under NSN 5330-00-499-5599. This indicates validated use in U.S. government and defense supply chains.
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