American Sealants ASI 12SK Butyl Sealant, 10.2 oz Caulk Cartridge

Product Name

American Sealants ASI 12SK Butyl Sealant

Brief Description

ASI 12SK is a one-part, butyl-based sealant reinforced with synthetic fibers for extra flexibility, adhesion, and versatility over an average butyl. It skins in 24 hours and fully cures in 21 days at 75 F, holding up to weathering, bubbling, and cracking better than typical butyl sealants.

Popular Applications & Uses

• Glass channel glazing panels
• Curtain wall joints
• Sealing insulated glass units in metal and wood frames
• Bedding thresholds
• Sealing around EPDM
• Masonry joints and seams
• Sheet metal work and sealing
• Secondary glazing seals
• General construction and industrial sealing

Industries that Commonly Use It

• Construction/ Building Services: glazing, curtain wall, and masonry sealing on job sites
• Metal Fabrication: sheet metal seams and joints
• General Manufacturing: sealing panels and enclosures in production
• Maintenance & Repair: resealing joints and thresholds on existing buildings
• Industrial Supply: stocked as a general-purpose butyl sealant for trade and MRO buyers

Special and Unique Features

• Synthetic Fiber Reinforcement: more flexibility and adhesion than an average butyl
• Paintable: accepts most industrial and commercial paints
• Non-Slump: stays put on overhead and vertical joints
• Non-Staining: safe on most substrates
• Low VOC: 259 grams/liter per ASTM D3960

Key Properties

• Chemistry: One-part butyl rubber
• Skin Time: 24 hours at 75 F
• Full Cure: 21 days at 75 F
• VOC Content: 259 g/L (ASTM D3960)
• Packaging: 10.2 oz caulk cartridge
• Colors: Black, Gray, White
• Compliance: Federal Spec TT-S-01657 Type 1; meets AAMA 808.3-05; USDA non-food-contact

Surface Compatibility

ASI 12SK bonds to a wide range of common construction and industrial substrates:

• Glass
• Steel
• Cement
• Painted metal
• Many plastics
• Aluminum and galvanized metal
• Wood
• EPDM
• Porous surfaces such as concrete and brick

Known backups / known substitutes

• None sourced. Ask a Perigee Direct rep for a comparable butyl sealant if 12SK is out of stock.

Comparison Note

Within the American Sealants butyl line, 12SK is the general-purpose glazing and construction grade, available in Black, Gray, and White to match the joint or finish.