Difference between EPDM rubber and PVC gasket for window sealing

2026-08-30

EPDM and PVC window gasket sample side by side, closeup shot, clean white studio background, no text

Rubber gaskets play a key role in air and water sealing. Aging of gaskets is one major cause of window air leakage and water seepage.

1. EPDM gasket (Recommended for export) Excellent UV resistance, wide temperature tolerance, long-lasting elasticity. It stays flexible for 15~25 years outdoors without hardening and cracking. Standard choice for high-end export aluminum windows.

2. PVC gasket (low cost domestic option) Lower price. Drawback: easily harden and turn brittle under sunlight, aging within 3-5 years. Not recommended for overseas projects due to high after-sales risk.

Sales tip: Clearly state gasket material in quotation. International buyers highly prefer EPDM rubber gaskets.

Keywords:

Shanxi Xinhe

Doors & Windows

Hardware durability test for aluminum windows

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