Coats Technical Services

Water Blocking Yarns

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Coats manufactures water swellable, spun super-absorbent polymer yarns.

These are ideal for dry blocking in wire and cable products.

Water Blocking Yarns
Ultrabloc SY

Coats Ultrabloc SY is a spun water-swellable polymer yarn that is ideal for dry blocking in wire and cable products.
It is proven in temperature cycling, heat ageing and freeze/ thaw testing and provides outstanding waterblocking properties.
Ultrabloc SY
Ultrabloc F

This flat water swellable yarn is specifically designed for dry blocking in fibre optic cables around central strength members.
Ultrabloc F