Joe,
From the BlazeMaster Dos and Don'ts list: (underlining is mine)
- Don'ts
◆ Do not use edible oils such as Crisco® as a gasket lubricant.
◆ Do not use petroleum or solvent-based paints, sealants, lubricants or fire stop materials.
◆ Do not use any glycol-based solutions as an anti-freeze.
◆ Do not mix glycerin and water solution in contaminated containers.
◆ Do not use both Teflon® tape and thread sealants simultaneously.
◆ Do not use solvent cement that exceeds its shelf life or has become discolored or gelled.
◆ Do not allow solvent cement to plug the sprinkler head orifice.
◆ Do not connect rigid metal couplers to BlazeMaster® CPVC grooved adapters.
◆ Do not thread or groove BlazeMaster® CPVC pipe.
◆ Do not use solvent cement near sources of heat, open flame, or when smoking.
◆ Do not pressure test until recommended cure times are met.
◆ Do not use dull or broken cutting tool blades when cutting pipe.
◆ Do not use BlazeMaster® CPVC pipe that has been stored outdoors, unprotected and is faded in color.
◆ Do not allow threaded rod to come in contact with the pipe.
◆ Do not install BlazeMaster® CPVC pipe in cold weather without allowing for expansion.
◆ Do not install BlazeMaster® CPVC pipe and fittings in dry systems, unless specifically listed for such use.