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Pre-Assembled 13mm Black PP Solid Screw Caps with PTFE/F217 Liners (31554-CASE) - Analytical Sales and Services, Inc.
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Qorpak CAP-00075 58-400 Green Thermoset Cap with F217 and PTFE Liner (Pack of 500) : Amazon.co.uk: Business, Industry & Science
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Consolidated Plastics 41088 Black Cap with F217 Liner, Polypropylene, 38 mm, 38-400 Finish, 12 Piece : Amazon.ca: Industrial & Scientific
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