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TX155 ✓ Verified by PartsTable
Brother · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

<b>Brother’s unique, patented TX tapes are designed to be extra hard wearing.</b><br><br><b>Features:</b><br>- gloss laminated labelling tape;<br>- white on transparent;<br>- 24mm width and 15.4m length. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-179-0972, 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
TX155
NSN: 5330-00-179-0972
FSC: 5330
CAGE: 72328 — COTTA TRANSMISSION CO LLC (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.625 INCHES NOMINAL IN
housing_bore_diameter4.501 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter3.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-179-0972
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: TX155 MFR: Brother ⚠ 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
•
CASE STYLE: SQUARE
•
MATERIAL: STEEL CASE
•
SEAL WIDTH: 0.625 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 3.500 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
HOUSING BORE DIAMETER: 4.501 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
MATERIALSTEEL CASE
SEAL WIDTH0.625 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER3.500 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
HOUSING BORE DIAMETER4.501 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
4503-16Interchangeable
interchangeable cross-reference
interchangeable
L8Interchangeable
interchangeable cross-reference
interchangeable
L-8-2558Interchangeable
interchangeable cross-reference
interchangeable
6522A18Interchangeable
interchangeable cross-reference
interchangeable
5947Interchangeable
interchangeable cross-reference
interchangeable
059477Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TX155?
TX155 is a SEAL,PLAIN ENCASED manufactured by Brother.
What parts can replace TX155?
There are 20 known substitutes for TX155: 4503-16, L8, L-8-2558 and 17 more. Substitute compatibility should be verified for your specific system.
Is TX155 still available?
TX155 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