Want to add automatic ring In SWR and sewage pipe production, the socket is only finished when the sealing ring is seated. That rubber ring — the elastomeric gasket that makes a push-fit joint watertight — has to sit evenly in the groove of every socket. Done by hand, it is slow, inconsistent, and a bottleneck right at the end of the line. Done automatically, it disappears into the takt time of the belling machine.
Why the Sealing Ring Matters
The rubber ring is what turns a plain SWR socket into a leak-proof push-fit joint. If the ring is missing, twisted, or seated unevenly, the joint fails in the field — so ring insertion is a quality checkpoint, not an afterthought. For context on how different joint types are formed, see our overview of the types of sockets in plastic pipes.
Manual vs Automatic Ring Insertion
Manual ring fitting has three recurring problems: it is slow, it is inconsistent operator-to-operator, and it caps the throughput of an otherwise fast belling line. Automating the step removes all three:
- Speed — an automatic device keeps pace with high-output socketing instead of throttling it.
- Consistency — every ring is seated the same way, reducing field-joint failures.
- Labour — operators move to supervision instead of repetitive fitting.
How RINGFIT Automates the Step
The RINGFIT ring insertion device is an automatic unit that inserts rubber rings onto SWR sockets immediately after the socketing operation. It connects to any belling machine through a link channel, so it becomes part of an existing line rather than a separate station. Its defining features:
- Cartridge holder — stores up to 300 rings at a time for long uninterrupted runs.
- Throughput — up to 400 pipes per hour, depending on diameter.
- Range — RINGFIT 160 handles 50–160 mm OD; socket type SWR.
- Integration — attaches to any belling machine via a link channel; user-friendly and reliable.
Editorial: specs (300-ring cartridge, 400 pipes/hr, 50–160 mm) are taken from the RINGFIT 160 technical specification. Verify before publishing.
Where Ring Insertion Fits in the Line
Ring insertion is the step that follows socketing. The pipe is belled on the belling machine, the socket cools, and RINGFIT seats the sealing ring before the pipe moves to packing. Because it bolts onto the belling station, it adds a finished, ready-to-ship joint without adding a separate line. It is one node in the full downstream extrusion line, sitting between socketing and packaging.
Is Automatic Ring Insertion Right for You?
If you produce SWR or elastomeric-sealed sockets in volume and ring fitting is your slowest manual step, automating it usually pays back fast: higher throughput, fewer rejected joints, and freed-up labour. If you socket only occasionally or at very low volume, manual fitting may still be adequate.
insertion to your belling line? Contact SICA India for a RINGFIT configuration matched to your socket range.
