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Technical Data Sheet
PartsTable / COMPONENT / S-1943
S-1943 ✓ 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,PUSH is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, special_features: APPLICATION TOLERANCES UNIQUE TO THE F119 ENGINE, fabrication_method: SOLID, cross-sectional_width: 0.250 INCHES NOMINAL IN, cross-sectional_height: 0.625 INCHES NOMINAL IN, end_item_identification: RSSP F119 ENGINE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-858-3651, 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
S-1943
NSN: 5330-00-858-3651
FSC: 5330
CAGE: 48294 — PSI-PERIPHERAL SUPPORT (USA)
SPECIFICATIONS
materialNICKEL ALLOY
special_featuresAPPLICATION TOLERANCES UNIQUE TO THE F119 ENGINE
fabrication_methodSOLID
cross-sectional_width0.250 INCHES NOMINAL IN
cross-sectional_height0.625 INCHES NOMINAL IN
end_item_identificationRSSP F119 ENGINE
cross-sectional_shape_styleRECTANGULAR
criticality_code_justificationFEAT
material_document_and_classificationASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE
NSN5330-00-858-3651
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S-1943 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 WIDTH: 0.250 INCHES NOMINAL IN
•
MATERIAL: RUBBER NATURAL LOCATION NOT OTHERWISE SPECIFIED
•
CROSS-SECTIONAL HEIGHT: 0.625 INCHES NOMINAL IN
•
FABRICATION METHOD: SOLID
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL WIDTH0.250 INCHES NOMINAL IN
MATERIALRUBBER NATURAL LOCATION NOT OTHERWISE SPECIFIED
CROSS-SECTIONAL HEIGHT0.625 INCHES NOMINAL IN
FABRICATION METHODSOLID
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
M-1861AInterchangeable
interchangeable cross-reference
interchangeable
M-1861A SHEET 4 PIECE 7Interchangeable
interchangeable cross-reference
interchangeable
S-1943Interchangeable
interchangeable cross-reference
interchangeable
631Interchangeable
interchangeable cross-reference
interchangeable
GA63-1Interchangeable
interchangeable cross-reference
interchangeable
115Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S-1943?
S-1943 is a SWITCH,PUSH.
What parts can replace S-1943?
There are 6 known substitutes for S-1943: M-1861A, M-1861A SHEET 4 PIECE 7, S-1943 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S-1943?
S-1943 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-858-3651. 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