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81125S41-38997ALT1PC8 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

81125S41-38997ALT1PC8: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-STYRENE CLASS SBR AND COPPER OR COPPER ALLOY OVERALL, hole_diameter: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 4.500 INCHES NOMINAL IN, overall_length: 4.500 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, aperture_diameter: 3.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-291-6740, 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
81125S41-38997ALT1PC8
NSN: 5330-00-291-6740
FSC: 5330 — Packing and Gasket Materials
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-STYRENE CLASS SBR AND COPPER OR COPPER ALLOY OVERALL
hole_diameter0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width4.500 INCHES NOMINAL IN
overall_length4.500 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
aperture_diameter3.000 INCHES NOMINAL IN
bolt_hole_quantity4
outside_corner_radius0.562 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleFIBRE OR COMPOSITION WITH WIRE INSERT
material_document_and_classificationMIL-P-1229 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
outside_edge_to_bolt_hole_center_distance_along_width0.562 INCHES NOMINAL IN
NSN5330-00-291-6740
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 81125S41-38997ALT1PC8 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: 0.062 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-1229 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: FIBRE OR COMPOSITION WITH WIRE INSERT
•
APERTURE DIAMETER: 3.000 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 4
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-1229 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH4.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFIBRE OR COMPOSITION WITH WIRE INSERT
OVERALL WIDTH4.500 INCHES NOMINAL IN
APERTURE DIAMETER3.000 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH3.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH3.375 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 5
3239851Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
81125S41-38423ALT3PC7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
81125S41-38277PC12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
81125S41-38993ALT1PC6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
81125S41-21197ALT12PC12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 81125S41-38997ALT1PC8?
81125S41-38997ALT1PC8 is a GASKET.
What parts can replace 81125S41-38997ALT1PC8?
There are 5 known substitutes for 81125S41-38997ALT1PC8: 3239851, 81125S41-38423ALT3PC7, 81125S41-38277PC12 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81125S41-38997ALT1PC8?
81125S41-38997ALT1PC8 is cataloged in the U.S. Government catalog under NSN 5330-00-291-6740. 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.