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P7639 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

P7639: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: PAPER AND PLASTIC, POLYETHYLENE (PP) OVERALL, hole_diameter: 0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.620 INCHES NOMINAL IN, overall_length: 2.620 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-641-6732, 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
P7639
NSN: 5330-00-641-6732
FSC: 5330 — Packing and Gasket Materials
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialPAPER AND PLASTIC, POLYETHYLENE (PP) OVERALL
hole_diameter0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.620 INCHES NOMINAL IN
overall_length2.620 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
bolt_hole_quantity4
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-B-121,TY 2,GR 2,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
outside_corner_bevel_length_along_width0.120 INCHES NOMINAL IN
outside_corner_bevel_length_along_length0.120 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_width0.404 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.404 INCHES NOMINAL IN
NSN5330-00-641-6732
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P7639 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
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-121,TY 2,GR 2,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE CORNER BEVEL LENGTH ALONG WIDTH: 0.120 INCHES NOMINAL IN
•
OUTSIDE CORNER BEVEL LENGTH ALONG LENGTH: 0.120 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 4
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-121,TY 2,GR 2,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH2.620 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH2.620 INCHES NOMINAL IN
OUTSIDE CORNER BEVEL LENGTH ALONG WIDTH0.120 INCHES NOMINAL IN
OUTSIDE CORNER BEVEL LENGTH ALONG LENGTH0.120 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.812 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH1.812 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P7639?
P7639 is a GASKET.
What is the NSN for P7639?
P7639 is cataloged in the U.S. Government catalog under NSN 5330-00-641-6732. 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.