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Technical Data Sheet
PartsTable / COMPONENT / B159566
B159566 ✓ 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 special_features: FIBER MATERIAL, bolt_circle_diameter: 6.875 INCHES NOMINAL IN, cross-sectional_thickness: 0.020 INCHES NOMINAL IN, largest_bolt_hole_diameter: 0.656 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION, smallest_bolt_hole_diameter: 0.531 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-353-2536, 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
B159566
NSN: 5330-00-353-2536
FSC: 5330
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
special_featuresFIBER MATERIAL
bolt_circle_diameter6.875 INCHES NOMINAL IN
cross-sectional_thickness0.020 INCHES NOMINAL IN
largest_bolt_hole_diameter0.656 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
smallest_bolt_hole_diameter0.531 INCHES NOMINAL IN
NSN5330-00-353-2536
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B159566 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
•
LARGEST BOLT HOLE DIAMETER: 0.656 INCHES NOMINAL IN
•
SMALLEST BOLT HOLE DIAMETER: 0.531 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 6.875 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
CROSS-SECTIONAL THICKNESS: 0.020 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LARGEST BOLT HOLE DIAMETER0.656 INCHES NOMINAL IN
SMALLEST BOLT HOLE DIAMETER0.531 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER6.875 INCHES NOMINAL IN
SPECIAL FEATURESFIBER MATERIAL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.020 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
8870-836000-455Interchangeable
interchangeable cross-reference
interchangeable
87-0451Interchangeable
interchangeable cross-reference
interchangeable
1143Interchangeable
interchangeable cross-reference
interchangeable
10921Interchangeable
interchangeable cross-reference
interchangeable
10921-00Interchangeable
interchangeable cross-reference
interchangeable
669-018-02A0-501KInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B159566?
B159566 is a GASKET.
What parts can replace B159566?
There are 23 known substitutes for B159566: 8870-836000-455, 87-0451, 1143 and 20 more. Substitute compatibility should be verified for your specific system.
Is B159566 still available?
B159566 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026