{"product_id":"tmi-hsw-control-valve-oil-seal","title":"TMI HSW Control Valve Oil Seal - Marine Transmission Seal Component","description":"\u003cp\u003e\u003cstrong\u003eControl Valve Oil Seal for TMI HSW Marine Transmissions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis precision-manufactured oil seal is designed for TMI HSW marine transmission control valves, providing reliable sealing to prevent fluid leaks and maintain proper hydraulic pressure. Essential for transmission service, control valve rebuilds, and seal replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl valve oil seal for TMI HSW marine transmissions\u003c\/li\u003e\n\u003cli\u003eOEM-quality seal material resists transmission fluid and heat\u003c\/li\u003e\n\u003cli\u003ePrevents fluid leaks at control valve location\u003c\/li\u003e\n\u003cli\u003ePrecision-manufactured to exact specifications\u003c\/li\u003e\n\u003cli\u003eMaintains proper hydraulic pressure for shift control\u003c\/li\u003e\n\u003cli\u003eEssential component for transmission and control valve service\u003c\/li\u003e\n\u003cli\u003eReliable sealing in demanding marine environments\u003c\/li\u003e\n\u003cli\u003eEnsures proper control valve operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFunction \u0026amp; Importance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe control valve oil seal is a critical component that seals the control valve assembly in TMI HSW marine transmissions. The control valve directs hydraulic pressure to engage and disengage clutches for shifting. Proper sealing at the control valve is essential to maintain hydraulic pressure, prevent internal leaks, and ensure reliable shift operation. A worn or damaged control valve seal causes internal pressure loss, poor shift quality, and potential transmission malfunction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTMI HSW Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTMI (Twin Disc Marine Italy) HSW series transmissions are hydraulically-shifted marine transmissions commonly found in commercial and recreational vessels. The control valve is the heart of the hydraulic shift system, and proper sealing is critical for reliable operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Replace:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eControl valve seals should be replaced during transmission rebuilds, control valve service, or when experiencing symptoms such as delayed shifting, poor shift quality, internal pressure loss, or transmission fluid leaks. Seals deteriorate over time due to heat, fluid exposure, and normal wear. Always replace control valve seals during any control valve disassembly or transmission rebuild.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eClean seal grooves and mating surfaces thoroughly before installation. Inspect control valve bore and seal surfaces for damage, scoring, or wear. Lubricate seal with clean transmission fluid before installation. Install carefully to avoid twisting, pinching, or cutting the seal. Ensure seal is properly seated in its groove. Follow TMI service procedures for control valve assembly and adjustment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eService Best Practices:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNever reuse old seals - always install new seals during control valve service. Replace all seals in the control valve assembly together. Use only OEM or equivalent quality seals designed for transmission fluid and operating temperatures. Test shift operation after service to verify proper control valve function.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Control valve oil seal\u003c\/li\u003e\n\u003cli\u003eCompatible with: TMI HSW marine transmissions\u003c\/li\u003e\n\u003cli\u003ePart Number: 0634309621\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZFI","offers":[{"title":"Default Title","offer_id":43564308791332,"sku":"0634309621","price":33.01,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/0634309621.png?v=1771139131","url":"https:\/\/marisolmarine.com\/products\/tmi-hsw-control-valve-oil-seal","provider":"Marisol Marine Company","version":"1.0","type":"link"}