Home / For Brass / Parts / Waterkey Seals / Valentino Technician Opti-Kork Waterkey Cork Assortment
technician opti kork waterkey assortmenttechnician opti kork waterkey assortment

Valentino Technician Opti-Kork Waterkey Cork Assortment


Valentino Opti-Kork Waterkey Corks are synthetic peel-and-stick waterkey cork seals.

The “Opti-Kork” line was introduced in 2018 as an aesthetic alternative to our popular Valentino Waterkey Corks which are still available to order. Since then, Opti-Korks have become our most popular waterkey cork seals.

  • Standard Waterkey Corks are 4.6mm (.180”) thick.
  • Thin Waterkey Corks are 3.4mm (.135”) thick.


  • The main advantage of using synthetic v. natural cork is that synthetic cork won’t deteriorate over time from water and saliva.
  • Synthetic waterkey corks are much easier to install due to their peel-and-stick adhesive backing.
  • Synthetic waterkey corks are more forgiving and will allow for more compression than either natural corks or neoprene.

“Everybody should be using synthetic corks.” – J.L. Smith

The Valentino Technician Opti-Kork Waterkey Cork Assortment is a great way to ensure you’re covered for most brands.


In Stock

SKU: 700027


The Valentino Technician Opti-Kork Waterkey Cork Assortment is a comprehensive assortment of 408 synthetic waterkey cork seals in a sturdy divided assortment box.

Standard Thickness:

  • 8.5mm
  • 9mm
  • 9.5mm
  • 10mm
  • 10.5mm
  • 11mm
  • 11.5mm
  • 12mm

Thin Thickness:

  • 8mm
  • 9mm
  • 10mm
Shipping & Delivery

Please note: Express & Overnight Shipping deliveries will require a signature. Please ensure someone is available at the delivery address to provide a signature to avoid any issues.

Economy $9.95
FedEx Ground Shipping $14.95
FedEx 2 Day $32.95
FedEx Overnight $64.95
International Shipping to Canada/Mexico (FedEx Ground) $24.95
International Shipping to Canada/Mexico (USPS Priority) $39.95
International Shipping to Canada/Mexico (FedEx Economy) $73.95
All Other International Shipping (USPS Priority) $49.95
All Other International Shipping (Fed Ex Priority) $73.95

Please be aware that orders with certain products may take longer to deliver depending on their stock levels and lead times.

For information about our Return Policy, please check here.