Straight - products marked with the "No-Lead" icon comply with national, no lead product material requirements and also comply with NSF 61, which allows the product to contain no more than 0.25% leadStraight - all MiniResters are AA sizePoly piston with two EPDM o-ringsPiston lubrication - dow-corning, 111 FDA approved silicone compoundSeamless chamber endPressurized air cushionStraight sweat arresters are compatible with press-fitting systems, such as Viega ProPress and all push-fitting systems
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