1. BS ISO 4633. Rubber seals. Joint rings for water supply, drainage and sewerage pipelines. Specification for materials. (13th September 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Rubber seals. Joint rings for water supply, drainage and sewerage pipelines. Specification for materials. (1st September 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗