Product Description

The STI SpecSeal® SSM Firestop Mortar is a lightweight, economical Portland cement-based firestop product that provides superior heat sinking and insulating properties.
Mixed with water, it forms a non-shrinking, high-yield mortar that can be poured, pumped, or troweled into place.
It delivers reliable fire, smoke, and gas resistance for medium to large openings with multiple penetrants including metallic/non-metallic pipes, cables, trays, ducts, and busways.

Key Benefits

• Lightweight & Economical – High yield per pound reduces installed cost.
• Fast Drying – Quick set allows early removal of forms.
• Easy Retrofit – Low density mortar simplifies re-penetration and resealing.
• High Performance – Meets ASTM E814 (UL1479) and CAN/ULC-S115 standards with ratings up to 3 hours.
• Durable & Versatile – Resists cracking, spalling, and freezing; adheres chemically with little mechanical anchoring.
• Paintable & Inspectable – Red color ensures easy identification and inspection.

Packaging

• SSM106: Poly Pail, 22.87 lbs (10.37 kg), ~1,225 in³ (20.1 L) yield
• SSM22B: Fiber Bag, 22.41 lbs (10.17 kg), ~1,225 in³ (20.1 L) yield
• Color: Pale Red
• Shelf Life: Unlimited (dry storage)