Gear Aid Seam Grip + SIL Silicone Sealant

WATERPROOF SILICONE SEAM SEALANT

Gear Aid Seam Grip + SIL™ Silicone Sealant is a specialised waterproof sealant designed specifically for outdoor gear made from silicone-treated fabrics, including tents, tarps, dry-sacks, ultralight packs, and more. Effective and easy to apply, this sealant permanently bonds to silicone-coated fabric to create a clear, flexible and 100% waterproof layer.

  • Ships in 24 hrs

  • Easy returns

  • Lifetime Warranty*

Frequently bought together

    • Seal Up To 7.3m of Seams  – A single 28g tube of Seam Grip + SIL™ Sealant can seal up to 7.3m of seams. 
    • Repair & Protect – As well as seam sealing, this product can also be used to repair pin-hole punctures and small tears. 
    • Suitable for Silicone Treated Fabrics – Permanently bonds to silicone-treated fabrics including silnylon and silpoly.   
    • Flexible & Durable – Cures to an elastic, rubber seal that flexes and stretches with high-performance gear. 
    • 100% Waterproof – Forms an impermeable waterproof seal that holds up to prolonged exposure to severe weather without peeling or cracking.
    • Weight: 28g
    • Material: Silicone rubber
    • Color: Slear
    • Adheres To: Silicone treated fabrics
    • Coverage: 7.3m of seams
    • Cure Time: 3-6 hours until touch dry. Wait 24 hours before use.    
    • Application Temperature: 15°C to 35°C
    • Storage: Store in cool, dry place
    • 1 x Gear Aid Seam Grip + SIL™ Silicone Sealant (28g Tube)

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.

Seal Out The Weather

Seam Grip + SIL™ Sealant is the gold standard for waterproofing silicone-treated fabrics. Designed for use on silicone-treated gear, it cures into a clear, elastic finish that is 100% waterproof and extremely resistant. One compact 28 g tube can be used to seal up to 7.3 m of seams, creating an impenetrable barrier against moisture where your shelter needs it most.

Permanently Bonds to Silicone-Treated Gear

Whether you're waterproofing new gear or maintaining well-used equipment, Seam Grip + SIL™  makes it possible to achieve professional-grade seam sealing at home. Specially formulated for silicone-treated gear, it permanently bonds to the fabric surface in a clear, flexible layer that remains effective in extreme conditions. Beyond seam sealing, it also can be used to repair pin-hole punctures and small tears.

Easy Application At Home

Seam sealing your gear at home with Seam Grip + SIL™ is surprisingly simple and satisfying. Just set up your tent or tarp, clean the seams, and apply the sealant with a small brush. Then, sit back and let time do the rest – no heat, no complicated tools, just a little patience while it air-cures overnight. It's the kind of straightforward maintenance you can tackle on a Sunday afternoon while you're daydreaming about your next trip.

Compatible with Alton Tarps & Tents

Alton Tarps and Tents are professionally seam sealed in-house and do not require seam-sealing before use. However, even the best sealant may begin to wear down over time with heavy use. If you notice your seams beginning to leak or see signs that the sealant is no longer covering the seam completely, applying Seam Grip + SIL™ Sealant will fix the problem in no time and ensure that your shelter keeps you dry for countless trips to come.