These polypropylene screw caps are to be used with T500 series internal thread sample tubes.

• Made of polypropylene
• Cap with silicone washer for leakproof seal
• Long skirt and super-fast thread design for easy seal
• Autoclavable

Caps are available with 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.

These silicone washer caps will guarantee a positive leakproof seal at all temperatures.