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Technical Data Sheet
2121972 ✓ 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 SWITCH ASSEMBLY,SPEED is a the manufacturer industrial component. Key specifications include material: FIBER AND RUBBER BODY, hole_diameter: 0.218 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, nominal_width: 0.500 INCHES IN, overall_width: 2.375 INCHES NOMINAL IN, overall_length: 3.375 INCHES NOMINAL IN, hardness_rating: 44.0 SHORE DUROMETER A MINIMUM AND 56.0 SHORE DUROMETER A MAXIMUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-819-5230, 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
2121972
NSN: 5330-00-819-5230
FSC: 5330
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialFIBER AND RUBBER BODY
hole_diameter0.218 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
nominal_width0.500 INCHES IN
overall_width2.375 INCHES NOMINAL IN
overall_length3.375 INCHES NOMINAL IN
hardness_rating44.0 SHORE DUROMETER A MINIMUM AND 56.0 SHORE DUROMETER A MAXIMUM OVERALL
performance_typeHIGH CAPACITY
style_designatorPLAIN
strengthening_featurePOLYESTER CORD
cross-sectional_thickness0.035 INCHES NOMINAL IN
cross-sectional_shape_styleCLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL
nominal_effective_outside_length40.000 INCHES IN
NSN5330-00-819-5230
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2121972 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 THICKNESS: 0.035 INCHES NOMINAL IN
HOLE DIAMETER: 0.218 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIAL: RUBBER OVERALL
HARDNESS RATING: 44.0 SHORE DUROMETER A MINIMUM AND 56.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLE: CLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.035 INCHES NOMINAL IN
HOLE DIAMETER0.218 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALRUBBER OVERALL
OVERALL WIDTH2.375 INCHES NOMINAL IN
OVERALL LENGTH3.375 INCHES NOMINAL IN
HARDNESS RATING44.0 SHORE DUROMETER A MINIMUM AND 56.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLECLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
3919709Interchangeable
interchangeable cross-reference
interchangeable
438Interchangeable
interchangeable cross-reference
interchangeable
191615H1Interchangeable
interchangeable cross-reference
interchangeable
5330PL0937000Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2121972?
2121972 is a SWITCH ASSEMBLY,SPEED.
What parts can replace 2121972?
There are 4 known substitutes for 2121972: 3919709, 438, 191615H1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2121972?
2121972 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-819-5230. This indicates validated use in U.S. government and defense supply chains.
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