Why buy from United Finishing Supply
Description
Karocle MS Clear Hardener is the urethane activator for Karocle 4:1 MS Clear Coat. Choosing the right speed for your booth temperature and job size is the key to flow-out, gloss, and tape time — so this hardener is offered in Fast and Medium activation speeds.
Choose your speed
- Fast (SCH-40) — for cooler shop temperatures, small panels, and spot repairs where quicker cure is wanted.
- Medium (SCH-41) — the all-round choice for moderate temperatures and multi-panel or overall work.
Mixing & application
Mix 4 parts Karocle MS Clear Coat to 1 part hardener by volume. Use within the product's pot life and follow the technical data sheet. Contains isocyanates — always use a supplied-air or appropriate organic-vapor respirator and skin/eye protection.
Specifications
- Brand: Karocle
- Use with: Karocle 4:1 MS Clear Coat (KCL-SC4101Q)
- Mix ratio: 4:1 (clear : hardener)
- Volume: 1 L
- Available speeds: Fast (KCL-SCH40), Medium (KCL-SCH41)
Note: We work hard to keep everything in stock and ready for you. If something is temporarily unavailable, we'll still get your order out the door within 3 business days.

