DOWSIL

Mechanics and fabricators reaching for a real silicone gasket rather than general-purpose caulk tend to land on DOWSIL — professional-grade sealants used across automotive, marine, industrial, and construction work, especially the high-temperature red RTV and multi-purpose clear/black RTV lines.

DOWSIL is the modern name for what was Dow Corning's silicone product line. After Dow acquired Dow Corning in 2016, most Dow Corning and Dow Corning Toray-branded products were renamed DOWSIL starting in November 2017, while a few established sister lines — including MOLYKOTE — kept their original names.

Sealant this specialized tends to get reordered by the exact cartridge count and color a shop already knows works — Bulk55 stocks the DOWSIL lineup in full case packs so shops can reorder the same formula every time instead of splitting single tubes.

We carry DOWSIL in bulk, including DOWSIL 736 Red High-Temperature Silicone Sealant and DOWSIL 732 Clear Multi-Purpose Silicone Sealant. Browse the full DOWSIL lineup here.

Further Reading

Read more: DOWSIL Silicone Sealants: Multi-Purpose & High-Temp Industrial Grade Options, DOWSIL 732 Black Silicone Sealant, Explained, and DOWSIL 736 Red High-Temp Silicone, Industrial Applications.