Grade reference

Westlake 2079

Suspension resin from Westlake Corporation, K-value 61.

All grades · sourced from Westlake Corporation · checked 19 August 2026

Producer
Westlake Corporation
Polymer
PVC
Type
Suspension resin
K-value
61
Inherent viscosity
0.79 dl/g
Producer lists it for
Extruded or calendered sheet · Foam · Rigid profile products

What that means in practice

K61, IV 0.79 — the rigid sheet, foam and profile grade a step above 5305. Still below the general-purpose pipe band, so it is a converter's resin rather than a pipe extruder's.

If K-values are not something you work with daily, our PVC grades and pricing guide explains what they measure and how prime, off-spec, regrind and regranulate differ.

What to check before buying Westlake 2079

  • Confirm the K-value on the batch, not just the grade name — low-K grades are chosen for flow, and a drift upward changes how it fills.
  • Ask what it was intended for. Low-K resin sold as general-purpose will disappoint in an application that needed mechanical strength.
  • For anything moulded, ask about colour consistency and regrind content if it is not prime.

Buying or selling this?

Browse the board to see what is listed today — public, no account needed. Nothing matching? Post a Wanted requirement with the grade and tonnage you need and sellers come to you. Selling it? List it — free, no commission.