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Technical Data Sheet
PartsTable / COMPONENT / PA7156
PA7156 ✓ 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: RUBBER CHLOROPRENE CLASS CR OVERALL, hole_diameter: 0.344 INCHES MINIMUM AND 0.359 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.812 INCHES NOMINAL IN, overall_length: 2.812 INCHES NOMINAL IN, special_features: MATERIAL IS MADE OF ARMSTRONG NEW LINE OF SYNTHESEAL ASBESTOS FREE GASKET MATERIAL, aperture_diameter: 1.875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-311-7349, 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
PA7156
NSN: 5330-00-311-7349
FSC: 5330
CAGE: 70763 — CONCENTRIC ROCKFORD INC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
hole_diameter0.344 INCHES MINIMUM AND 0.359 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.812 INCHES NOMINAL IN
overall_length2.812 INCHES NOMINAL IN
special_featuresMATERIAL IS MADE OF ARMSTRONG NEW LINE OF SYNTHESEAL ASBESTOS FREE GASKET MATERIAL
aperture_diameter1.875 INCHES NOMINAL IN
outside_corner_radius0.406 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classification76 FSCM 92764 MFR REF SINGLE MATERIAL RESPONSE OVERALL
center_to_center_distance_between_bolt_holes_along_width2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
center_to_center_distance_between_bolt_holes_along_length2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
NSN5330-00-311-7349
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PA7156 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: 0.406 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 76 FSCM 92764 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
APERTURE DIAMETER: 1.875 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.344 INCHES MINIMUM AND 0.359 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH2.812 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.406 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIAL DOCUMENT AND CLASSIFICATION76 FSCM 92764 MFR REF SINGLE MATERIAL RESPONSE OVERALL
APERTURE DIAMETER1.875 INCHES NOMINAL IN
HOLE DIAMETER0.344 INCHES MINIMUM AND 0.359 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL IS MADE OF ARMSTRONG NEW LINE OF SYNTHESEAL ASBESTOS FREE GASKET MATERIAL
OVERALL WIDTH2.812 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
103647Interchangeable
interchangeable cross-reference
interchangeable
1N589Interchangeable
interchangeable cross-reference
interchangeable
4820PL1825893Interchangeable
interchangeable cross-reference
interchangeable
6660Interchangeable
interchangeable cross-reference
interchangeable
148344Interchangeable
interchangeable cross-reference
interchangeable
8924140Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PA7156?
PA7156 is a GASKET.
What parts can replace PA7156?
There are 7 known substitutes for PA7156: 103647, 1N589, 4820PL1825893 and 4 more. Substitute compatibility should be verified for your specific system.
Is PA7156 still available?
PA7156 is currently cancelled.
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Last verified: July 2026