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18-197 ✓ Verified by PartsTable
Trefl · 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 COIL,RADIO FREQUENCY is a Trefl industrial component. Key specifications include width: 8.500 INCHES MINIMUM AND 9.625 INCHES MAXIMUM IN, material: STEEL BODY, bore_type: STRAIGHT, port_style: INVERTED FLARE SINGLE PORT, body_length: 0.700 INCHES NOMINAL IN, handle_type: BENT LONG. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-022-0693, 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
18-197
NSN: 5340-00-022-0693
FSC: 5340
CAGE: 24235 — WILLIAMS INTERNATIONAL CO., L.L.C. (USA)
SPECIFICATIONS
width8.500 INCHES MINIMUM AND 9.625 INCHES MAXIMUM IN
materialSTEEL BODY
bore_typeSTRAIGHT
port_styleINVERTED FLARE SINGLE PORT
body_length0.700 INCHES NOMINAL IN
handle_typeBENT LONG
temp_rating-15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
tine_length12.250 INCHES NOMINAL IN
bore_diameter1.500 INCHES NOMINAL IN
handle_length48.000 INCHES NOMINAL IN
overall_width2.500 INCHES NOMINAL IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
NSN5340-00-022-0693
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18-197 MFR: Trefl ⚠ 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: PLASTIC
•
OPEN END INSIDE DIAMETER: 0.808 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 0.500 INCHES NOMINAL IN
•
CLOSED END OVERALL DIAMETER: 0.755 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
OPEN END INSIDE DIAMETER0.808 INCHES NOMINAL IN
LENGTH UNDER SHOULDER0.500 INCHES NOMINAL IN
CLOSED END OVERALL DIAMETER0.755 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
C-845Interchangeable
interchangeable cross-reference
interchangeable
40338Interchangeable
interchangeable cross-reference
interchangeable
657-1004-000Interchangeable
interchangeable cross-reference
interchangeable
S912-201-80Interchangeable
interchangeable cross-reference
interchangeable
R60123013Interchangeable
interchangeable cross-reference
interchangeable
S2C230Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18-197?
18-197 is a COIL,RADIO FREQUENCY manufactured by Trefl.
What parts can replace 18-197?
There are 16 known substitutes for 18-197: C-845, 40338, 657-1004-000 and 13 more. Substitute compatibility should be verified for your specific system.
Is 18-197 still available?
18-197 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