Key Features Reliable Sealing Performance — prevents fluid and air leaks in hydraulic, fuel, and engine/ lubrication systems, helping maintain pressure and system integrity. Durable Elastomer Material — resistant to wear, pressure fluctuations, temperature changes, and exposure to hydraulic, fuel, and lubricating fluids. Precision Round Cross Section — ensures consistent sealing across mating surfaces and grooves in JOHN DEERE assemblies. OEM Quality Component — genuine John Deere part (T77932) manufactured to exact John Deere specifications for precise fit and long service life. Wide Applicability — suitable for hydraulic, fuel, and engine sealing tasks across agricultural, construction, and industrial equipment. Product Details Part number: T77932 Seal type: Round cross section O-ring Material: Elastomer Function: Seals against leaks and maintains pressure in hydraulic, fuel, and lubrication pathways Manufacturing status: Genuine John Deere OEM component Performance characteristics: Designed to withstand wear, pressure changes, temperature fluctuations, and exposure to common system fluids Typical use cases: Hydraulic system sealing, engine and transmission sealing, fuel system sealing, general machinery maintenance Compatibility Agricultural Tractors — 10201120163018302030213021402240244026402840 3040314033403640 4040424044404640 Utility & Compact Tractors — 204021502350255027502950 Construction & Industrial Equipment — 300B310A310B310C 400410510 Combine Harvesters — 33004400660077008820 Forestry & Other Equipment — 440C Skidder540 Skidder