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Technical Data Sheet
PartsTable / COMPONENT / 156/30
156/30 ✓ 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 156/30 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-1990, 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
156/30
NSN: 5330-00-641-1990
FSC: 5330
CAGE: K7018 — WELLMAN GROUP (GBR)
SPECIFICATIONS
Part Number156/30
NSN5330-00-641-1990
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 156/30 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
•
APERTURE LENGTH: 4.093 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
MATERIAL: CORK OVERALL
•
HOLE DIAMETER: 0.219 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
APERTURE WIDTH: 4.031 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE LENGTH4.093 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
MATERIALCORK OVERALL
OVERALL LENGTH5.406 INCHES NOMINAL IN
HOLE DIAMETER0.219 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
APERTURE WIDTH4.031 INCHES NOMINAL IN
OVERALL WIDTH5.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
173Interchangeable
interchangeable cross-reference
interchangeable
30306BInterchangeable
interchangeable cross-reference
interchangeable
15630Interchangeable
interchangeable cross-reference
interchangeable
514008Interchangeable
interchangeable cross-reference
interchangeable
1038-30101-10Interchangeable
interchangeable cross-reference
interchangeable
433739-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 156/30?
156/30 is a 156/30.
What parts can replace 156/30?
There are 17 known substitutes for 156/30: 173, 30306B, 15630 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 156/30?
156/30 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-1990. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026