The TP34MS-1 is a maintenance seal kit used for servicing the nose and main landing gear oleo struts on the Piper PA-34 Seneca series (including PA34-200 and PA34-200T) and related variants. It is designed to restore proper sealing, damping performance, and pressure retention in the aircraft’s oleo strut system.

This kit is a routine maintenance item used during strut overhauls when hydraulic oil leakage or nitrogen pressure loss occurs. It does not replace the entire strut assembly—instead, it renews the wear components inside the existing unit.

Its primary features include:
Complete strut seal and service kit for Piper PA-34 aircraft
Includes O-rings, wiper seals, backup rings, and valve components
Restores nitrogen/oil sealing performance in oleo struts
Used for both nose gear and main gear strut servicing
FAA-PMA replacement parts suitable for maintenance and overhaul
Designed for hydraulic (MIL-H-5606) aircraft strut systems
Supports standard landing gear maintenance procedures

Typical kit contents (may vary slightly by supplier):

O-rings (multiple sizes for strut sealing stages)
Wiper / scraper ring
Backup rings
Valve core / cap components
Gaskets and sealing washers
These kits are widely used in general aviation maintenance because they provide a cost-effective way to restore strut performance, often resolving leaks or sagging gear issues without replacing the entire landing gear assembly.