What it is used for
Shrink fitting
A bush, bearing or shaft packed in dry ice contracts enough to slide into its housing by hand, then grips as it warms. No hammering, no heating of the housing.
Cold grinding and deflashing
Spices, plastics and rubber parts are chilled with dry ice so they grind cleanly or shed their flash without smearing.
Pipe freezing for repairs
Dry ice packed around a water line freezes a plug inside it, so a valve can be changed without draining the system.
Blast cleaning
Machines that shave block ice clean moulds, motors and food equipment with no water or grit. Pellet-fed machines need pellets, which we do not supply.
- Price
- ₹110 per kg plus GST
- Minimum order
- 10 kg
- Bulk orders
- Up to 30% off
How to do it
Break blocks inside a cloth with a mallet to pack closely around a part. Wear gloves and eye protection.
For shrink fitting, leave the part buried for 20–40 minutes depending on its mass, then fit it immediately.
Do the work in an open or ventilated bay. In pits, tanks and enclosed spaces the gas displaces air.
Keep spare blocks in a closed thermocol box near the job, not in a sealed drum.
How much to order
Shrink fitting a medium bearing or bush takes about 5–10 kg. For blast cleaning, check your machine's consumption per hour and order for the shift, since dry ice cannot be held for long.
Before you use itTreat dry ice as a confined-space hazard. Carbon dioxide has no smell and collects in low places. Do not use it in a pit or vessel without ventilation and a second person standing by.
Questions from this trade
Do you supply pellets for blasting machines?
No, blocks only. They suit block-shaver machines. If your machine takes 3 mm pellets, check with its maker whether it can run on shaved block ice.
Can you supply a plant every week?
Yes, tell us the quantity and the days. Regular bulk supply is priced at up to 30% below the ₹110/kg list rate.
How cold does a steel part get?
Left long enough it approaches −78 °C, which shrinks steel by roughly one part in a thousand of its diameter. That is enough for most interference fits.
Tell us the kilos, the place and the date.
Dry ice blocks at ₹110 per kg plus GST. Minimum 10 kg. Up to 30% off on bulk orders.