Sierra 18-9031-1 90311 Bellows Adhesive
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Sierra 18-9031-1 90311 Bellows Adhesive Product Description
Keep your boat's sterndrive or outboard running smoothly with Sierra Bellows Adhesive, a trusted aftermarket solution designed for secure, watertight seals in demanding marine environments. This specialized sealant bonds bellows assemblies effectively, preventing leaks that could lead to costly corrosion or drive unit failures. Whether you're rebuilding a universal joint bellows, shift bellows, or gimbal bearing housing, this adhesive delivers reliable performance comparable to original equipment.
Why Sierra Bellows Adhesive Stands Out
- Marine-Grade Formula: Engineered to withstand constant exposure to saltwater, fuel, and vibration, ensuring long-lasting adhesion under high-pressure conditions.
- Easy Application: Applies smoothly without dripping, allowing precise placement even in tight engine compartments.
- Quick Curing: Sets firmly within hours, minimizing downtime during repairs so you can get back on the water faster.
- Versatile Compatibility: Ideal for Mercury-compatible sterndrives, including Alpha One, Bravo, and Sport Jet models, as well as similar setups from other major brands.
- Proven Durability: Users report seals holding up through seasons of heavy use, outperforming generic sealants in real-world boating tests.
Pro Tips for Optimal Application
Achieving a bulletproof seal starts with preparation. Begin by thoroughly cleaning all surfaces with a marine-safe degreaser to remove old sealant, oils, or debris—residue is the number one cause of failures. Lightly roughen the bonding areas with fine sandpaper for better mechanical grip.
- Apply a thin, even layer to both mating surfaces using the included applicator or a small brush.
- Assemble components immediately, pressing firmly to squeeze out excess adhesive.
- Allow full cure time (typically 24 hours) before submersion or operation—rushing this step invites leaks.
- For extra protection in high-vibration areas, clamp parts lightly during initial curing.
Common mistake to avoid: Over-applying adhesive, which can squeeze into gear oil paths and cause contamination. Less is more for clean, effective bonds.
Extend the Life of Your Seals
Regular inspections during routine engine maintenance can catch wear early. Look for cracks, hardening, or white powdery residue on bellows, which signal UV degradation or chemical exposure. Pair this adhesive with fresh bellows kits for comprehensive rebuilds, and always flush the drive with fresh water after saltwater runs to reduce corrosion risks.
Boat owners who've switched to Sierra report fewer breakdowns and simpler seasonal storage prep, turning potential headaches into hassle-free adventures.
Frequently Asked Questions
What is Sierra Bellows Adhesive primarily used for?
It's formulated for bonding rubber or silicone bellows in marine sterndrives and outboards, creating waterproof seals around universal joints, shift cables, and gimbal housings to protect internal components from water intrusion.
Is Sierra 18-9031-1 a direct replacement for Mercury parts?
Yes, it precisely replaces Mercury 92-86166, matching the original's viscosity, cure time, and chemical resistance for seamless compatibility in OEM-style repairs.
How long does the adhesive take to fully cure?
Initial set occurs in 1-2 hours, but full strength develops over 24 hours. Avoid stressing the joint until fully cured to ensure maximum bond integrity.
Can this adhesive be used on non-Mercury engines?
Absolutely—it's suitable for any marine drive system with similar bellows materials, including OMC, Volvo Penta, and Yamaha setups, as long as surfaces are clean and compatible.
What safety precautions should I take when applying it?
Work in a well-ventilated area, wear gloves and eye protection, and keep away from open flames. It's non-toxic once cured but can irritate skin during application.
Does Sierra Bellows Adhesive resist fuel and oil exposure?
Yes, its formula is resistant to gasoline, diesel, gear lube, and ethanol blends commonly found in marine fuels, preventing breakdown in splash zones.
How should I store unused adhesive?
Store in a cool, dry place away from direct sunlight. Tightly sealed, it maintains effectiveness for up to 2 years, but check consistency before use.
Equip your boat with Sierra Bellows Adhesive for peace of mind on every outing. Reliable seals mean reliable performance—don't let a small leak sideline your adventures.
Save $1 when you buy the Sierra 18-9031-1 90311 Bellows Adhesive for only $11 from NVN Marine! Same day shipping before 3pm.
Sierra 18-9031-1 90311 Bellows Adhesive Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Sierra Engine Parts |
| Weight: |
0.13 lb |
| Description: |
2 fl. oz. |
Sierra 18-9031-1 90311 Bellows Adhesive User Reviews
Sierra 18-9031-1 90311 Bellows Adhesive Shipping & Return
| Shipping Weight: |
0.13 lb |
|---|---|
| Box Sizes: |
1.00 (h) x 3.00 (w) x 9.00 (l) |
| Cubic Feet: |
27.0 |
| Returnable: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.