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QD635 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 8.125 INCHES NOMINAL IN, aperture_width: 6.000 INCHES NOMINAL IN, overall_length: 9.438 INCHES NOMINAL IN, aperture_length: 7.688 INCHES NOMINAL IN, inside_corner_radius: 0.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-428-2162, 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
QD635
NSN: 5330-00-428-2162
FSC: 5330
CAGE: 66289 — WISCONSIN MOTORS, LLC (USA)
SPECIFICATIONS
hole_diameter0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width8.125 INCHES NOMINAL IN
aperture_width6.000 INCHES NOMINAL IN
overall_length9.438 INCHES NOMINAL IN
aperture_length7.688 INCHES NOMINAL IN
inside_corner_radius0.500 INCHES NOMINAL IN
outside_corner_radius0.438 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-G-12803,NO. +3415-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
outside_edge_to_bolt_hole_center_distance_along_width0.438 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.438 INCHES NOMINAL IN
NSN5330-00-428-2162
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: QD635 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
•
INSIDE CORNER RADIUS: 0.500 INCHES NOMINAL IN
•
APERTURE WIDTH: 6.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE LENGTH: 7.688 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.438 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 2.144 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
HOLE DIAMETER: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE CORNER RADIUS0.500 INCHES NOMINAL IN
APERTURE WIDTH6.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
APERTURE LENGTH7.688 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.438 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH2.144 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL WIDTH8.125 INCHES NOMINAL IN
HOLE DIAMETER0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.438 INCHES NOMINAL IN
OVERALL LENGTH9.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
10087517Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-636Interchangeable
interchangeable cross-reference
interchangeable
31-084Interchangeable
interchangeable cross-reference
interchangeable
128135R1Interchangeable
interchangeable cross-reference
interchangeable
S3562Interchangeable
interchangeable cross-reference
interchangeable
1229R122Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is QD635?
QD635 is a GASKET.
What parts can replace QD635?
There are 7 known substitutes for QD635: 10087517, GGG-W-636, 31-084 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for QD635?
QD635 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-428-2162. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026