{"id":2845,"date":"2018-06-21T10:06:11","date_gmt":"2018-06-21T10:06:11","guid":{"rendered":"https:\/\/permabond.com\/thread-sealant-cure\/"},"modified":"2023-07-18T13:13:38","modified_gmt":"2023-07-18T13:13:38","slug":"thread-sealant-cure","status":"publish","type":"post","link":"https:\/\/permabond.com\/es\/thread-sealant-cure\/","title":{"rendered":"Why didn\u2019t my thread sealant cure?"},"content":{"rendered":"

\"thread<\/p>\n

Anaerobic thread sealant (pipe sealant) fills all of the voids or airspace between metal threads creating a permanent plastic seal.\u00a0 They do not shrink or relax over time.<\/p>\n

Anaerobic adhesives and sealants require only two conditions to cure. They are 1. The presence of metal ions and 2. The absence of oxygen.\u00a0 Seems easy enough right?\u00a0 Yes and no.\u00a0 Following are some common issues that can adversely affect curing thread sealants.<\/p>\n

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Contact with metal<\/h2>\n
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  1. The presence of metal ions must be in contact with the thread sealant. Paint and coatings can prevent that.\u00a0 Similarly, well-meaning users will apply PTFE tape (Teflon\u00ae tape) to \u201chelp\u201d seal.\u00a0 The tape blocks contact with the metal and the exact opposite occurs.\u00a0\u00a0 Instead of helping the seal, the tape prevents cure making a leak path possible.<\/li>\n
  2. Mind the Gap! Note the maximum gap on the datasheet of the product you are using.\u00a0 Generally, if the gap exceeds 0.5mm (0.020 in.) the sealant at the center of that gap may have difficulty curing as it isn\u2019t close enough to the metal needed to cure.<\/li>\n
  3. Pipe sealant also covers the metal ions.\u00a0Pipe joints sealed with low-strength thread sealants can be dismantled using normal tools. Heating parts with a hot air gun or blow torch will make parts easier to disassemble. Before reapplying sealant, clean pipe joints with a wire brush to expose the metal.<\/li>\n<\/ol>\n

    Lack of contact with oxygen<\/h2>\n

    When the thread sealant is contained in the threads, oxygen is excluded.\u00a0 Following, are the directions for using anaerobic pipe sealants on both parallel and tapered pipe joints.<\/p>\n