15143 82111: SEAL:OIL;XMSN Seals model: 8FD20~25 model: 8FD20~25 model: 4D98E Product Specifications: Part Name: Oil Seal for Transmission Part Number: 15143 82111 Type: Transmission Oil Seal Design and Function: Spring loaded design for better sealing performance Prevents oil leakage from the transmission and keeps contaminants out Material and Construction: Sealing Element: Likely made from a high performance elastomer compound such as Nitrile rubber (NBR) or Fluoroelastomer (FKM) Case: Typically metal encased for improved durability and ease of installation Performance Characteristics: Shaft Speed Capability: Up to 3000 feet per minute (FPM) Pressure Handling: Approximately 7 PSI at 1000 FPM 015" TIR at higher speeds Application: Designed for use in automotive transmissions to seal critical areas where oil retention is crucial Quality and Standards: Meets or exceeds API standards such as GL 4 for manual transmissions or relevant automatic transmission fluid specifications