Phenolic is a type of thermoset plastic material known for its physical and molding properties. Because phenolic caps have strength and durability with heat-resistant and insulating properties they are widely used in laboratory environments. ... They are also the most temperature tolerant of plastic caps.
Can phenolic caps be autoclaved?
Rubber Lined Caps: Black phenolic caps with rubber liners are autoclavable. This liner is FDA approved for food and pharmaceutical applications. Excellent properties of resilience, resistance to moisture vapor and relatively low gas transmission.