Blocksurf Blackseal Cement Surfboard Fin Repair
- Free worldwide shipping
- Low stock - 7 items left
- Backordered, shipping soon
Blocksurf Blackseal Cement is a flexible, waterproof adhesive formulated for surfboard fin repair — designed to re-bond loose fins, seal fin box edges, and secure fin base connections that have lifted, cracked, or separated from the board.
Key Features:
- Fin-Specific Formula — Blackseal's rubber-based cement is engineered for the flex and stress points unique to surfboard fins, where rigid adhesives crack and fail under repeated torsional load
- Flexible Bond — cures to a flexible, slightly rubbery finish that moves with the board rather than cracking under flex — critical for fin repairs that need to last more than a few sessions
- Waterproof Cure — fully waterproof once cured; bonds hold in saltwater and resist delamination from repeated submersion and UV exposure
- Wide Compatibility — works on polyester and epoxy boards, foam, fiberglass, and fin materials including glass, composite, and neoprene-wrapped fin bases
- Easy Tube Application — no mixing required; apply directly from tube with precision tip for controlled coverage without mess
- Fast Tack Time — tacky enough to hold position quickly so repairs stay aligned while curing
A loose or rattling fin kills drive and makes your board unpredictable through turns — Blackseal is the fix that gets you back in the water. It's particularly useful for sealing the perimeter of fin boxes where water infiltrates into the core, and for re-bonding fin base edges on glassed-on setups that have lifted with age. Keep a tube in your ding kit for fin emergencies at home or on the road.
Use: Clean and dry bonding surfaces thoroughly before application. Apply cement to both surfaces, allow to tack (2–5 min), then press firmly together and hold or clamp. Allow full cure before surfing — check product instructions for cure time at your ambient temperature.
Storage: Cap tightly after each use. Store at room temperature away from heat and direct sunlight. Keep out of reach of children.
At Revolution, we work hard to get your gear out quickly and safely so you can get back in the water.
Order Processing
Most in-stock orders are processed within 1–3 business days, excluding weekends and holidays. Once your order ships, you’ll receive a shipping confirmation email with tracking information.
Please note that processing times may be longer during holidays, sales, product launches, or other high-volume periods.
Domestic Shipping
We currently offer shipping within the United States.
Free standard shipping is available on orders over $100, excluding surfboards and other oversized items.
Shipping rates for orders under $100, expedited methods, and oversized items are calculated at checkout.
Oversized Items
Some items require special handling and do not qualify for free shipping or standard prepaid rates. These may include, but are not limited to:
- Surfboards
- Travel surfboard bags
- Skateboards
- Skimboards
- Bodyboards
- SUPs
- SUP and kayak paddles
- Balance boards
- Flexi-Hex and other large-format accessories
Oversized shipping charges are calculated separately or provided by quote. If you have questions before ordering, please contact us at gosurf@revosurf.com.
Surfboard Shipping
Surfboards are excluded from free shipping and may require additional shipping, packaging, and handling charges due to size and freight requirements.
Because surfboards are fragile oversized items, delivery times may vary and extra transit protection may be required. Any surfboard-specific shipping charges will be shown at checkout or coordinated separately if needed.
Local Pickup
Local pickup may be available for eligible orders. If you have questions about pickup, please contact us before or after placing your order.
Pickup inquiries can be directed to:
Camarillo Shop
2235 Ventura Blvd
Camarillo, CA 93010
(805) 383-1288
Ventura Shop
819 E Thompson Blvd
Ventura, CA 93001
(805) 667-8822
Delivery Times
Transit times vary based on destination, carrier, and shipping method selected at checkout. Delivery estimates are not guaranteed and may be affected by weather, holidays, or carrier delays.
Tracking
Once your order ships, you’ll receive tracking information by email. Please allow up to 24 hours for tracking to update after the label is created.
Shipping Address Accuracy
Please review your shipping address carefully before submitting your order. Revolution is not responsible for delays, losses, or additional charges resulting from incorrect or incomplete shipping information provided at checkout.
Lost, Stolen, or Damaged Packages
If your order arrives damaged, or if something is missing, please contact us as soon as possible after delivery.
Once a package has been transferred to the carrier, shipping delays, loss, or damage in transit may be outside our direct control, but we’ll do our best to help you resolve the issue.
International Shipping
If international shipping is offered, customers are responsible for any applicable duties, taxes, customs fees, and return shipping costs unless otherwise noted.
Questions
If you have any questions about shipping, oversized items, surfboard delivery, or local pickup, reach out to us at gosurf@revosurf.com.