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Technical Data Sheet
PartsTable / COMPONENT / 138S4
138S4 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, hardness_rating: 40.0 SHORE DUROMETER A MAXIMUM OVERALL, peripheral_diameter: 1.312 INCHES NOMINAL IN, center_hole_diameter: 0.938 INCHES NOMINAL IN, cross-sectional_height: 0.328 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE/RECTANGULAR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-153-7596, 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
138S4
NSN: 5330-00-153-7596
FSC: 5330
CAGE: 77237 — DANA OFF HIGHWAY PRODUCTS, LLC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
hardness_rating40.0 SHORE DUROMETER A MAXIMUM OVERALL
peripheral_diameter1.312 INCHES NOMINAL IN
center_hole_diameter0.938 INCHES NOMINAL IN
cross-sectional_height0.328 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
NSN5330-00-153-7596
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 138S4 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 HEIGHT: 0.328 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
PERIPHERAL DIAMETER: 1.312 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CENTER HOLE DIAMETER: 0.938 INCHES NOMINAL IN
•
HARDNESS RATING: 40.0 SHORE DUROMETER A MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.328 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER1.312 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
CENTER HOLE DIAMETER0.938 INCHES NOMINAL IN
HARDNESS RATING40.0 SHORE DUROMETER A MAXIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
100-199Interchangeable
interchangeable cross-reference
interchangeable
845-2104599PC16Interchangeable
interchangeable cross-reference
interchangeable
MS 35756-6Interchangeable
interchangeable cross-reference
interchangeable
200119Interchangeable
interchangeable cross-reference
interchangeable
10099Interchangeable
interchangeable cross-reference
interchangeable
A100DA/805366 ITEM 16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138S4?
138S4 is a PACKING,PREFORMED.
What parts can replace 138S4?
There are 7 known substitutes for 138S4: 100-199, 845-2104599PC16, MS 35756-6 and 4 more. Substitute compatibility should be verified for your specific system.
Is 138S4 still available?
138S4 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026