Seals, Gaskets & Service Kits

A one part, fast skinning (10 minutes) and curing (1-7 days) product with superior strength, adhesion, elongation and life. Cures in temperatures from -20 to +120° F. Wet sand or paint after cure. Exc... More Details

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A blend of corrosion inhibiting additives designed to coat engine components during engine storage and reduce the formation of surface rust. Sold in case packs only.... More Details

A blend of corrosion inhibiting additives designed to coat engine components during engine storage and reduce the formation of surface rust.Sold in case packs only... More Details

More protection, lasts longer than traditional oils UV inhibitors to help prevent weathering and fadingEasy, no-drip application/ideal for vertical surfacesFor use on teak and other fine woodsAdvanced... More Details

More protection, lasts longer than traditional oils UV inhibitors to help prevent weathering and fadingEasy, no-drip application/ideal for vertical surfacesFor use on teak and other fine woodsAdvanced... More Details

Makes teak almost maintenance free. Will outlast any oil or sealer and is easy to use. No-drip, no-splash formula will not turn teak black and will last, even in tropical sun and salt.... More Details

Makes teak almost maintenance free. Will outlast any oil or sealer and is easy to use. No-drip, no-splash formula will not turn teak black and will last, even in tropical sun and salt.... More Details

Makes teak almost maintenance free. Will outlast any oil or sealer and is easy to use. No-drip, no-splash formula will not turn teak black and will last, even in tropical sun and salt.... More Details

Makes teak almost maintenance free. Will outlast any oil or sealer and is easy to use. No-drip, no-splash formula will not turn teak black and will last, even in tropical sun and salt.... More Details

Makes teak almost maintenance free. Will outlast any oil or sealer and is easy to use. No-drip, no-splash formula will not turn teak black and will last, even in tropical sun and salt.... More Details

Star brite® Ceramics Wax & Seal uses the power of SiO2 tech to create a hard, durable top-layer that repels water, dirt, salt, dust, and other contaminants, as well as providing protection against dam... More Details

Star brite® Ceramics Wax & Seal uses the power of SiO2 tech to create a hard, durable top-layer that repels water, dirt, salt, dust, and other contaminants, as well as providing protection against dam... More Details

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Base repair kits include: 1/2 oz bottle of glue with brush cap, plastic bushing, and wooden dowel mandrel. Bushing Dimensions: 1.905-2.012"W x 2.9"H... More Details

Butyl sealant for the installation of skylights. Flexible, easy to removeWeather-resistantPaintable, non-staining... More Details

Butyl sealant for the installation of skylights. Flexible, easy to removeWeather-resistantPaintable, non-staining... More Details

O-Rings for 0528C0799A... More Details

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Replacement Parts for Nightwave. A SIONYX official accessory.... More Details

The #1 selling marine sealant is a 100% marine grade silicone that won't turn yellow, shrink or sag. Remains flexible from -70° to +480° F. Bonds to fiberglass, plastic, wood, glass and metal. Unaffec... More Details

The #1 selling marine sealant is a 100% marine grade silicone that won't turn yellow, shrink or sag. Remains flexible from -70° to +480° F. Bonds to fiberglass, plastic, wood, glass and metal. Unaffec... More Details

The #1 selling marine sealant is a 100% marine grade silicone that won't turn yellow, shrink or sag. Remains flexible from -70° to +480° F. Bonds to fiberglass, plastic, wood, glass and metal. Unaffec... More Details

The #1 selling marine sealant is a 100% marine grade silicone that won't turn yellow, shrink or sag. Remains flexible from -70° to +480° F. Bonds to fiberglass, plastic, wood, glass and metal. Unaffec... More Details

The #1 selling marine sealant is a 100% marine grade silicone that won't turn yellow, shrink or sag. Remains flexible from -70° to +480° F. Bonds to fiberglass, plastic, wood, glass and metal. Unaffec... More Details

The #1 selling marine sealant is a 100% marine grade silicone that won't turn yellow, shrink or sag. Remains flexible from -70° to +480° F. Bonds to fiberglass, plastic, wood, glass and metal. Unaffec... More Details

100% Pure silicone - uncut General purposePermanently flexibleCures at room temperatureExcellent weatherabilityMold & mildew resistant-unaffected by chemicals, fuel or UVUL RecognitionNot for use belo... More Details

100% Pure silicone - uncut General purposePermanently flexibleCures at room temperatureExcellent weatherabilityMold & mildew resistant-unaffected by chemicals, fuel or UVUL RecognitionNot for use belo... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

Nearly as strong as Sikaflex®-291 and slightly more flexible, Sikaflex®-291 LOT features a slower skin time to allow for longer working time. Perfect for general sealing all around the vessel, hull se... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

A one-component, fast cure, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications such as deck hardware and equipme... More Details

Sikaflex®-715 is a one-component, chemical curing roof sealant that works on a wide range of RV roofing components and open joints. The sealant has low VOC content. It resists shrinking and retains UV... More Details

Sikaflex®-715 is a one-component, chemical curing roof sealant that works on a wide range of RV roofing components and open joints. The sealant has low VOC content. It resists shrinking and retains UV... More Details

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See Sierra's catalog for current application information.... More Details

See Sierra's catalog for current application information.... More Details

See Sierra's catalog for current application information.... More Details

See Sierra's catalog for current application information.... More Details

Engineered with premium grade materials that excel in the extreme marine environment. Components are tested to meet or exceed OEM specifications for fit, form and function.... More Details

VST O-Ring... More Details

See Sierra's catalog for current application information.... More Details

Seal Kit 26-41365A 3... More Details

See Sierra catalog for complete application information... More Details

See Sierra's catalog for current application information.... More Details

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Replacement Seal... More Details

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The SeaStar Pro Front Mount Outboard Cylinders have keyed support brackets to prevent racking of the cylinder which gives it a more solid feel and more robust bushings. Suited for all those critical h... More Details

Seal Kit... More Details

SeaStar HS5151 Seal Kit - Fits 1984 - 1990 Helms.... More Details

Gland Seal Kit... More Details

Service Kit For Newer Style Baystar Helms... More Details

Complete assembled end gland with replacement retaining wire.... More Details

Complete assembled end gland with replacement retaining wire.... More Details

Gland/Seal kit... More Details

For use with BayStar Compact Cylinders: HC4645H, HC4647H, HC4648H & HC4658H.Includes: 1 Wiper1 Shaft Seal1 O-Ring4 BHCS 1/4" NC x 1.5" SS1 Gland, Port Side1 Gland, Starboard Side1 Pivot plate1 Pivot p... More Details

Engineered to provide today's high-powered offshore tournament boats and other high-performance vessels with precise, smooth and reliable steering. This heavy-duty cylinder is designed to work with al... More Details

Engineered to provide today's high-powered offshore tournament boats and other high-performance vessels with precise, smooth and reliable steering. This heavy-duty cylinder is designed to work with al... More Details

The SeaStar Pro Front Mount Outboard Cylinders have keyed support brackets to prevent racking of the cylinder which gives it a more solid feel and more robust bushings. Suited for all those critical h... More Details

A wide choice of cylinder configurations make it easy to spec a system which can handle a variety of large boat performance requirements and accommodate most user preferences. Heavy duty brass and sta... More Details

The SeaStar front mount pivot cylinder is for Catamaran designs. This cylinder will fit ALL engines that require HC5345 steering cylinder. The internal o-ring is designed to limit the amount of fluid ... More Details

Can be used on single and multiple drives with multiple steering station connection. This cylinder features simple autopilot interface.... More Details

Can be used on single and multiple drives with multiple steering station connection. This cylinder features simple autopilot interface.... More Details

Can be used on single and multiple drives with multiple steering station connection. This cylinder features simple autopilot interface.... More Details

These cylinders are for single and dual rudder vessels with two axis articulation and offer easy autopilot interface. Cylinders are supplied with bleeder fittings.... More Details

These cylinders are for single and dual rudder vessels with two axis articulation and offer easy autopilot interface. Cylinders are supplied with bleeder fittings.... More Details

These cylinders are for single and dual rudder vessels with two axis articulation and offer easy autopilot interface. Cylinders are supplied with bleeder fittings.... More Details

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PC-rated mini thin-line light that functions as both a clearance and side marker light when properly mounted. Sonically sealed, waterproof lens and housing is single unit. Kit includes A91 light, blac... More Details

PC-rated mini thin-line light that functions as both a clearance and side marker light when properly mounted. Sonically sealed, waterproof lens and housing is single unit. Kit includes A91 light, chro... More Details

Designed for 12V Systems Meets the requirements of SAE/DOT/FMVSS/CMVSS standards when properly installedSonically sealed, waterproofStud-MountPolycarbonate lens and housing, stainless steel baseSingle... More Details

Designed for 12V SystemsMeets the requirements of SAE/DOT/FMVSS/CMVSS standards when properly installedSonically sealed, waterproofStud-MountPolycarbonate lens and housing, stainless steel baseSingle ... More Details

Stud mount clearance or side marker light with stainless steel/black base. Sonically sealed waterproof lens and housing in a single unit. Single wire design grounds through mounting stud.... More Details

Stud mount clearance or side marker light with stainless steel/black base. Sonically sealed waterproof lens and housing in a single unit. Single wire design grounds through mounting stud.... More Details