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Technical Data Sheet
PartsTable / COMPONENT / 57BQ
57BQ ✓ 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 outside_diameter: 1.438 INCHES NOMINAL IN, bearing_surface_width: 0.188 INCHES NOMINAL IN, gage_ring_outside_diameter: 1.062 INCHES NOMINAL IN, cross-sectional_shape_style: METAL WITH SOFT FILLER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-366-6270, 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
57BQ
NSN: 5330-00-366-6270
FSC: 5330
CAGE: 36024 — LIBBY POWER SYSTEMS, LLC (USA)
SPECIFICATIONS
outside_diameter1.438 INCHES NOMINAL IN
bearing_surface_width0.188 INCHES NOMINAL IN
gage_ring_outside_diameter1.062 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL WITH SOFT FILLER
NSN5330-00-366-6270
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 57BQ 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 SHAPE STYLE: METAL WITH SOFT FILLER
•
OUTSIDE DIAMETER: 1.438 INCHES NOMINAL IN
•
BEARING SURFACE WIDTH: 0.188 INCHES NOMINAL IN
•
GAGE RING OUTSIDE DIAMETER: 1.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEMETAL WITH SOFT FILLER
OUTSIDE DIAMETER1.438 INCHES NOMINAL IN
BEARING SURFACE WIDTH0.188 INCHES NOMINAL IN
GAGE RING OUTSIDE DIAMETER1.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
600AInterchangeable
interchangeable cross-reference
interchangeable
5782-4165Interchangeable
interchangeable cross-reference
interchangeable
575R946H11Interchangeable
interchangeable cross-reference
interchangeable
8040PL1183731Interchangeable
interchangeable cross-reference
interchangeable
MIL-A-5540 CL3FMBInterchangeable
interchangeable cross-reference
interchangeable
MIL-A-5540Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 57BQ?
57BQ is a GASKET.
What parts can replace 57BQ?
There are 21 known substitutes for 57BQ: 600A, 5782-4165, 575R946H11 and 18 more. Substitute compatibility should be verified for your specific system.
Is 57BQ still available?
57BQ 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