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Gear Aid

Seam Grip WP Waterproof Sealant and Adhesive

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Description

Gear Aid Seam Grip WP is a clear urethane seam sealant and repair adhesive in a 28 g tube. It seals the seams on a tent fly and glues a tear shut in a pack or a rain jacket, and it cures into a flexible rubbery bond that stays put through wind, washing and being stuffed in a bag.

What it fixes

  • Leaking seams on tents, tarps, awnings and rain gear. One tube covers about 3.6 m of seam in a 6 mm bead.
  • Small holes and tears in nylon, polyester, canvas and vinyl.
  • Pinholes in sleeping mats and self-inflating mattresses.
  • Boot soles and rands that have started to peel away.

Once cured it handles use from -29 to 82 °C, so a repair made at home holds on a frosty morning at Falls Creek and in a hot tent in the Kimberley. It is made for PU-coated and uncoated fabrics. Silicone-treated fabrics and silnylon need a silicone-based sealer.

How to use it

  1. Clean the area with isopropyl alcohol and let it dry. On anything that is not fabric, scuff it lightly with sandpaper first.
  2. For seams, pull the stitching taut and brush a thin film over it and under the fabric fold. Seal a tent from the inside.
  3. For a hole or tear, put masking tape on the inside, then spread Seam Grip WP on the outside to 13 mm past the damage.
  4. Lay it flat and leave it for 8 to 12 hours.

Work somewhere between 16 and 38 °C with a bit of humidity in the air, as moisture is what cures it. A slight tackiness on a fresh repair is normal and wears off with use; a dusting of talc-free powder removes it straight away.

In a hurry on the track? Let it cure for 2 hours, then press a Tenacious Tape patch over the top, 13 mm wider than the adhesive all round.

Shelf life and storage

To keep a part-used tube going, squeeze the adhesive up to the neck, wipe the thread clean, put a small piece of foil over the opening and screw the cap on over it. Then seal the tube in a plastic bag and keep it in the freezer.

Specifications
  • Color
    Clear
  • Material
    Thermoset urethane
  • Type
    Urethane seam sealant and repair adhesive
  • Weight
    28 g (1 oz) tube
  • Compatibility
    Nylon, canvas, vinyl, polyester and most fabrics. Not for silicone-treated fabrics or silnylon
  • Length
    150 mm
  • Height
    25 mm
  • Width
    100 mm
  • Temperature range
    Use: -29 to 82 °C. Apply at 16 to 38 °C, above 40% relative humidity

Sizing Guide

Additional Information
  • Clear thermoset urethane sealant and adhesive, 28 g tube
  • Seals about 3.6 m of seam per tube
  • Cures in 8 to 12 hours
  • Bonds nylon, polyester, canvas and vinyl
  • Flexible, waterproof and washable once cured
  • Apply at 16 to 38 °C; handles use from -29 to 82 °C
  • Not for silicone-treated fabrics or silnylon
  • Made in USA

FAQ's

How long does Seam Grip WP take to dry?
Seam Grip WP cures in 8 to 12 hours. Keep the repair flat and leave the tent unpacked for that time. For a faster field repair, let it cure for 2 hours and then cover it with a Tenacious Tape patch.

How much seam does one tube of Seam Grip WP cover?
One 28 g tube of Seam Grip WP seals about 3.6 m of seam in a bead 6 mm wide. Measure the fly seams on your tent before you start, and get a second tube for a larger tent.

Does Seam Grip WP work on silnylon tents?
No. Seam Grip WP is a urethane sealant for PU-coated and uncoated fabrics such as nylon, polyester, canvas and vinyl. Silicone-treated fabrics, including silnylon, need a silicone-based seam sealer to get a bond.

Can you wash gear repaired with Seam Grip WP?
Yes. Seam Grip WP is washable once it has fully cured, and the seal stays flexible, so a repaired jacket or pack goes through the wash and back into use.

What temperature do you need to apply Seam Grip WP?
Apply Seam Grip WP between 16 and 38 °C with relative humidity above 40%, because moisture in the air is what cures it. After curing, the repair handles use from -29 to 82 °C.

Can Seam Grip WP fix a leaking sleeping mat?
Yes. Find the hole with soapy water, mark it, clean and dry the spot, then spread Seam Grip WP 13 mm around the hole. Keep the mat flat for 8 to 12 hours before you inflate it.

How do you store an opened tube of Seam Grip WP?
Squeeze the Seam Grip WP up to the neck of the tube, cover the opening with a small piece of foil, screw the cap on over it, then keep the tube in a sealed plastic bag in the freezer.