How to find the right Compression Fitting Tube Inserts AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Compression Fitting Tube Inserts
- When an insert is needed
- Use one with soft plastic tubing such as polyethylene, nylon or vinyl, and with thin-wall soft metal tube, wherever the maker calls for it. The insert supports the tube wall against ferrule compression, preventing collapse and pull-out.
- Sized to both OD and ID
- Match the insert to the tube's OD and its inside diameter or wall thickness. Too loose and the tube still collapses. Too tight and it will not insert or will split the tube.
- Material
- Brass or stainless inserts are usual. Use stainless for corrosive media or stainless fittings. The insert is wetted by the media, so it must be compatible with it.
- Full insertion
- Push the insert in fully so its shoulder sits against the tube end before making up the fitting. A partially seated insert leaves the ferrule zone unsupported.
Brands that matter
- Swagelok: Inserts for soft plastic tubing, sized by OD and ID.
- Parker: Tube inserts for plastic tubing with its compression fittings.
- Anderson Metals: Brass inserts for plastic tubing with low-pressure brass compression fittings.
What to avoid
- Skipping the insert on polyethylene or nylon tube
- Choosing an insert by OD alone without checking the tube ID
- Using inserts in rigid metal tube that does not call for them