Phenolic tubing is a resin impregnated, spiral wrapped, and heat cured tube. It is much stronger than cardboard tubing, with almost 5x the compression strength. It is also a very good base for rockets that will require the strengthening of fibreglass, Kevlar, carbon fibre, or similar materials. For this reason, we recommend phenolic as the appropriate tubing for rockets that are 6.0, 7.5, or 11.4" in diameter, or rockets that will require strengthening for the rigours of transonic or supersonic flight. We also recommend phenolic for transonic or supersonic flights in kits of 1.1" through 2.5" diameter, as phenolic can withstand those flights without strengthening in most instances. PML Phenolic tubing is very heat resistant and is highly recommended for motor mount tubes and minimum diameter applications.
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