PartsTable
Technical Data Sheet
PartsTable / O-RING / 7-57-168
7-57-168 ✓ 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 7-57-168 is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, outside_diameter: 1.000 INCHES NOMINAL IN, style_designator: SKIRTED/ROUND WITH CONCAVE TOP, attachment_method: STUD, overall_thickness: 1.500 INCHES NOMINAL IN, nominal_thread_size: 0.250 INCHES STUD IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-455-7025, 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
7-57-168
NSN: 5331-00-455-7025
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL COMP 303
outside_diameter1.000 INCHES NOMINAL IN
style_designatorSKIRTED/ROUND WITH CONCAVE TOP
attachment_methodSTUD
overall_thickness1.500 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES STUD IN
material_transparencyCLEAR
thread_quantity_per_inch28 STUD
thread_series_designatorUNF STUD
gripping_surface_conditionGRIP AID
NSN5331-00-455-7025
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7-57-168 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
•
CENTER HOLE DIAMETER: 1.727 INCHES MINIMUM AND 1.747 INCHES MAXIMUM IN
•
MATERIAL: RUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
•
OUTSIDE DIAMETER: 1.943 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER1.727 INCHES MINIMUM AND 1.747 INCHES MAXIMUM IN
MATERIALRUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
OUTSIDE DIAMETER1.943 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
A-A-59588 CL 3B GR 70Interchangeable
interchangeable cross-reference
interchangeable
AS568-132Interchangeable
interchangeable cross-reference
interchangeable
S9026M132Interchangeable
interchangeable cross-reference
interchangeable
D2000-M2AA810A13EA14F17Interchangeable
interchangeable cross-reference
interchangeable
2-140E540-80Interchangeable
interchangeable cross-reference
interchangeable
AS568B-140Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7-57-168?
7-57-168 is a 7-57-168.
What parts can replace 7-57-168?
There are 25 known substitutes for 7-57-168: A-A-59588 CL 3B GR 70, AS568-132, S9026M132 and 22 more. Substitute compatibility should be verified for your specific system.
Is 7-57-168 still available?
7-57-168 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