PartsTable / COMPONENT / T-55A
T-55A
✓ Verified by PartsTable
Yealink · 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 T55A Android-based phone features a 4.3-inch capacitive adjustable touch screen and the consistent Teams-tailored experience. This easy-to-use and reliable option is ideal for office workers, front desks and common areas. The T55A facilitates high-quality collaboration with flexibility thanks to its support for Yealink Optima HD voice and Yealink Noise Proof Technology, and its USB port for USB headsets and Bluetooth dongle.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-884-8771, indicating validated use in U.S. government and defense logistics supply chains.
WHERE IT FITS
T-55A
NSN: 5340-00-884-8771 FSC: 5340 CAGE: 99017 — CAPLUGS LLC DBA MOKON DIV CAPLUGS (USA)
SPECIFICATIONS
material PLASTIC length_under_shoulder 1.000 INCHES NOMINAL IN open_end_inside_diameter 3.180 INCHES NOMINAL IN closed_end_overall_diameter 2.990 INCHES NOMINAL IN NSN 5340-00-884-8771
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: T-55A
MFR: Yealink
⚠ 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
• LENGTH UNDER SHOULDER: 1.000 INCHES NOMINAL IN
• OPEN END INSIDE DIAMETER: 3.180 INCHES NOMINAL IN
• CLOSED END OVERALL DIAMETER: 2.990 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH UNDER SHOULDER 1.000 INCHES NOMINAL IN OPEN END INSIDE DIAMETER 3.180 INCHES NOMINAL IN CLOSED END OVERALL DIAMETER 2.990 INCHES NOMINAL IN END ITEM IDENTIFICATION ENGINE,AIRCRAFT F-117,PW-100;HELICOPTER,CARRIER BASED ASW;HELICOPTER,SEARCH AND RESCUE;HELICOPTER,USCG;AIRCRAFT,B-2 BOMBER(ATB);HELO,ELECT COUNTERMEASURES;MISSILE,MINUTEMAN LGM-30;HELICOPTER,IROQUOIS UH-1;AIRCRAFT,HERCULES C-130 MATERIAL PLASTIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
238 Upgraded Successor successor cross-reference
successor
55A Upgraded Successor successor cross-reference
successor
269 Upgraded Successor successor cross-reference
successor
N5558V Interchangeable interchangeable cross-reference
interchangeable
IC55A Interchangeable interchangeable cross-reference
interchangeable
399-723 Interchangeable interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
Ready to buy T-55A?
Compare prices from verified sellers on eBay
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is T-55A?
T-55A is a CAP-PLUG,PROTECTIVE,DUST AND MOI manufactured by Yealink.
What parts can replace T-55A?
There are 17 known substitutes for T-55A: 238, 55A, 269 and 14 more. Substitute compatibility should be verified for your specific system.
Is T-55A still available?
T-55A is currently cancelled.