3M 08578 Strip-Calk Black Seam Sealer, 1-Foot Butyl Rubber Strips, Paintable, 60 per carton

3M 08578 Strip-Calk Black Seam Sealer, 1-Foot Butyl Rubber Strips, Paintable, 60 per carton

• 3M Strip-Calk is a soft butyl rubber caulking material that quickly and permanently fills all types of seams, joints and openings - long-lasting auto body maintenance and repair in much less time. Simply thumb 1 ft lengths into place without spraying or tools, and smooth it with a finger. Strip-Calk is paintable immediately and never hardens, shrinks or becomes brittle, eliminating rework.
• Features
  • Permanently pliable butyl rubber—stays flexible and resists hardening or cracking for long-lasting seals
  • High heat resistance—performs reliably in engine bays, firewalls, and other high-temperature areas
  • Fast, no-mess application—thumb the strip in place and smooth with a fingertip; no mixing or tools required
  • Non-shrinking, paint-ready formulation—prevents rework and supports quick top-coating
• Specifications
  • Part No.: 8578
  • Product Line: MMM
  • MFR Model: 08578
  • Standard/Approvals: California PROP65 Warning: Cancer and Reproductive Harm | OSHA 29 CFR 1910.1200
  • Applications: For joint filling, trunk seams, voids and gaps
  • Manufacturer: 3M Products
  • Alternate Part Number-1: 60980019552
  • UPC: 051135085783
  • Brand: 3M
  • Paintable (Y/N): Yes
  • Specific Gravity: 1.92
  • Color: Black
  • Container Type: Box
  • Form: Paste
  • Quantity: 60 strips per carton
  • Part Number 08578, 3M ID 60980019552, UPC 051135085783
• The Strip-Calk 08578 can also be referred to as thumb-grade seam sealer, butyl rubber caulk strip, engine-compartment seam filler, non-shrinking caulking strip, black gap sealer.

3M manufactures the Strip-Calk 08578—a soft butyl rubber seam sealer delivered in ready-to-install one-foot strips engineered for rapid, durable sealing of inconspicuous automotive joints and gaps, especially in high-heat zones.

Q: How is this seam sealer applied?
A: Just thumb a one-foot Strip-Calk piece into place and smooth it with your fingertip—no additional preparation or tools needed.

Q: Will it shrink or become brittle over time?
A: No. It remains permanently pliable and non-shrinking, preventing seal failure and reducing the need for rework.

Q: Is Strip-Calk 08578 suitable for high-temperature areas?
A: Yes, its high-heat resistance (up to approximately 200 °F) makes it ideal for use around engine compartments, firewalls, and similar environments.