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PartsTable / COMPONENT / 235-406
235-406 ✓ 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 SPRING COUNTERBALANCE 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 5330-00-297-5089, 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
235-406
NSN: 5330-00-297-5089
FSC: 5330
CAGE: 53964 — KAYDON CUSTOM FILTRATION CORPORATION (USA)
SPECIFICATIONS
Part Number235-406
NSN5330-00-297-5089
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 235-406 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
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
HARDNESS RATING: 60.0 SHORE DUROMETER A NOMINAL OVERALL
•
APERTURE DIAMETER: 22.813 INCHES MINIMUM AND 22.937 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
CROSS-SECTIONAL THICKNESS: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 25.313 INCHES MINIMUM AND 25.437 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
MATERIALRUBBER SYNTHETIC OVERALL
HARDNESS RATING60.0 SHORE DUROMETER A NOMINAL OVERALL
APERTURE DIAMETER22.813 INCHES MINIMUM AND 22.937 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
OUTSIDE DIAMETER25.313 INCHES MINIMUM AND 25.437 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
235-406Interchangeable
interchangeable cross-reference
interchangeable
12AInterchangeable
interchangeable cross-reference
interchangeable
9-190-0121Interchangeable
interchangeable cross-reference
interchangeable
04Z52Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 235-406?
235-406 is a SPRING COUNTERBALANCE.
What parts can replace 235-406?
There are 4 known substitutes for 235-406: 235-406, 12A, 9-190-0121 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 235-406?
235-406 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-297-5089. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026