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Technical Data Sheet
PartsTable / COMPONENT / T312
T312 ✓ 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 CONTROL ASSEMBLY,TRANSMISSION is a the manufacturer industrial component. Key specifications include material: STEEL BAND, body_width: 1.530 INCHES MAXIMUM IN, body_height: 1.560 INCHES MAXIMUM IN, body_length: 2.030 INCHES MAXIMUM IN, design_type: SOLID, inclosure_type: FULLY INCLOSED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-486-2934, 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
T312
NSN: 5340-00-486-2934
FSC: 5340
CAGE: 80266 — AP PARTS CO INDUSTRIAL SALES DIV (USA)
SPECIFICATIONS
materialSTEEL BAND
body_width1.530 INCHES MAXIMUM IN
body_height1.560 INCHES MAXIMUM IN
body_length2.030 INCHES MAXIMUM IN
design_typeSOLID
inclosure_typeFULLY INCLOSED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
lower_end_length3.625 INCHES NOMINAL IN
special_featuresTRANSMISSION SHIFT CONTROL APPLICATION
style_designatorROUND
upper_end_length4.000 INCHES NOMINAL IN
NSN5340-00-486-2934
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: T312 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: TWO PIECE
•
LOOP INSIDE DIAMETER: 3.625 INCHES NOMINAL IN
•
MATERIAL: STEEL BAND
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORTWO PIECE
LOOP INSIDE DIAMETER3.625 INCHES NOMINAL IN
MATERIALSTEEL BAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
4082Upgraded Successor
successor cross-reference
successor
1857086-2Upgraded Successor
successor cross-reference
successor
11737499Upgraded Successor
successor cross-reference
successor
SK6298Upgraded Successor
successor cross-reference
successor
2KK863Upgraded Successor
successor cross-reference
successor
SNRC306406Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T312?
T312 is a CONTROL ASSEMBLY,TRANSMISSION.
What parts can replace T312?
There are 22 known substitutes for T312: 4082, 1857086-2, 11737499 and 19 more. Substitute compatibility should be verified for your specific system.
Is T312 still available?
T312 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