Polypropylene Screw Caps are available either with or without a silicone washer between the cap and the tube to ensure a positive leakproof seal at all temperatures. The cap features a long skirt and a super-fast thread design allowing it to be removed or screwed on with a single turn.
- Withstands temperatures from -196 °C to 121 °C
- Available in 8 different colors
- Packaged 1000 per pack