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Technical Data Sheet
PartsTable / COMPONENT / SC4K21N
SC4K21N ✓ 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 BUTTON,DOOR is a the manufacturer industrial component. Key specifications include length: 2.000 INCHES NOMINAL OVERALL IN, material: IRON OR STEEL OVERALL, unit_type: DOUBLE WING, features_provided: SCREW, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-243-3287, 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
SC4K21N
NSN: 5340-00-243-3287
FSC: 5340
CAGE: 10266 — CALIFORNIA HARDWARE CO (USA)
SPECIFICATIONS
length2.000 INCHES NOMINAL OVERALL IN
materialIRON OR STEEL OVERALL
unit_typeDOUBLE WING
features_providedSCREW
surface_treatmentCADMIUM OVERALL
NSN5340-00-243-3287
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SC4K21N 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
•
MATERIAL: IRON OR STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
FEATURES PROVIDED: SCREW
•
UNIT TYPE: DOUBLE WING
•
LENGTH: 2.000 INCHES NOMINAL OVERALL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON OR STEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
FEATURES PROVIDEDSCREW
UNIT TYPEDOUBLE WING
LENGTH2.000 INCHES NOMINAL OVERALL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
95208-2Upgraded Successor
successor cross-reference
successor
32C94Upgraded Successor
successor cross-reference
successor
CD4Upgraded Successor
successor cross-reference
successor
4 SC 4Interchangeable
interchangeable cross-reference
interchangeable
762FB1-4Interchangeable
interchangeable cross-reference
interchangeable
762FBInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SC4K21N?
SC4K21N is a BUTTON,DOOR.
What parts can replace SC4K21N?
There are 10 known substitutes for SC4K21N: 95208-2, 32C94, CD4 and 7 more. Substitute compatibility should be verified for your specific system.
Is SC4K21N still available?
SC4K21N 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