Sika 219 LM SikaFlex Low Modulus Polyurethane Sealant This is a high performance, low modulus polyurethane base, non-sag elastomeric sealant with excellent adhesion to a wide variety of substrates. Meets Federal Specification TT-S-00230C, Type II, Class A and ASTM C-920, Type S, Grade NS, Class 25 and TT-S-001543A, Type non-sag. 12 - 15 mm Cut-Off. Excellent non-sag. Available in black, white, gray, tan, MB bronze, limestone. Cure Type: Moisture |