PartsTable
Technical Data Sheet
640KB37 ✓ 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 material: PAPER AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, hole_diameter: 0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 12.000 INCHES NOMINAL IN, aperture_width: 10.000 INCHES NOMINAL IN, overall_length: 18.562 INCHES NOMINAL IN, aperture_length: 16.562 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-040-2814, 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
640KB37
NSN: 5330-00-040-2814
FSC: 5330
CAGE: 89619 — MACK TRUCKS, INC. DBA MACUNGIE OPERATIONS DIV LEHIGH VALLEY OPERATIONS (USA)
SPECIFICATIONS
materialPAPER AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
hole_diameter0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width12.000 INCHES NOMINAL IN
aperture_width10.000 INCHES NOMINAL IN
overall_length18.562 INCHES NOMINAL IN
aperture_length16.562 INCHES NOMINAL IN
special_features2 OF 16 BOLT HOLES ARE 0.406 IN.DIA IN
inside_corner_radius2.000 INCHES NOMINAL IN
bearing_surface_width1.000 INCHES NOMINAL IN
outside_corner_radius3.000 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-040-2814
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 640KB37 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
OUTSIDE CORNER RADIUS: 3.000 INCHES NOMINAL IN
HOLE DIAMETER: 0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803 +3442-A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: PAPER AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
APERTURE WIDTH: 10.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE CORNER RADIUS3.000 INCHES NOMINAL IN
HOLE DIAMETER0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL WIDTH12.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803 +3442-A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SPECIAL FEATURES2 OF 16 BOLT HOLES ARE 0.406 IN.DIA IN
OVERALL LENGTH18.562 INCHES NOMINAL IN
MATERIALPAPER AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
APERTURE WIDTH10.000 INCHES NOMINAL IN
APERTURE LENGTH16.562 INCHES NOMINAL IN
INSIDE CORNER RADIUS2.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
3012306-00Interchangeable
interchangeable cross-reference
interchangeable
259Interchangeable
interchangeable cross-reference
interchangeable
28949Interchangeable
interchangeable cross-reference
interchangeable
8CF332Interchangeable
Same NIIN cross-reference
interchangeable
8332759Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 640KB37?
640KB37 is a GASKET.
What parts can replace 640KB37?
There are 5 known substitutes for 640KB37: 3012306-00, 259, 28949 and 2 more. Substitute compatibility should be verified for your specific system.
Is 640KB37 still available?
640KB37 is currently cancelled.
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