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11638-A — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

11638-A: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.410 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, aperture_diameter: 6.190 INCHES NOMINAL IN, bolt_circle_diameter: 6.810 INCHES NOMINAL IN, cross-sectional_thickness: 0.028 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-126-1039, 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
11638-A
NSN: 5330-01-126-1039
FSC: 5330 — Packing and Gasket Materials
CAGE: 76760 — NEW VENTURE GEAR INC NEW PROCESS GEAR DIV (USA)
SPECIFICATIONS
hole_diameter0.410 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
aperture_diameter6.190 INCHES NOMINAL IN
bolt_hole_quantity8
bolt_circle_diameter6.810 INCHES NOMINAL IN
cross-sectional_thickness0.028 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
NSN5330-01-126-1039
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 11638-A 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: 0.028 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
•
APERTURE DIAMETER: 6.190 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 8
•
BOLT CIRCLE DIAMETER: 6.810 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.410 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.028 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
APERTURE DIAMETER6.190 INCHES NOMINAL IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER6.810 INCHES NOMINAL IN
HOLE DIAMETER0.410 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES 1
6259083Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 11638-A?
11638-A is a GASKET.
What parts can replace 11638-A?
There is 1 known substitute for 11638-A: 6259083. Substitute compatibility should be verified for your specific system.
What is the NSN for 11638-A?
11638-A is cataloged in the U.S. Government catalog under NSN 5330-01-126-1039. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.