For Screw Size 3/8 in, Steel, Fastener Seal - Zinc-Plated Steel with Buna-N Rubber - 61JX60|ZMBSW-7 - Grainger
![Rubber-Cal Buna-N Sheet- 0.125-in Thick x 36-in Width x 12-in Length- 60A Durometer- Black- ASTM D2000 BG in the Rubber Sheets & Rolls department at Lowes.com Rubber-Cal Buna-N Sheet- 0.125-in Thick x 36-in Width x 12-in Length- 60A Durometer- Black- ASTM D2000 BG in the Rubber Sheets & Rolls department at Lowes.com](https://mobileimages.lowes.com/productimages/d3f88ee7-31f6-4031-b529-561802dfd7f9/42137722.jpg)
Rubber-Cal Buna-N Sheet- 0.125-in Thick x 36-in Width x 12-in Length- 60A Durometer- Black- ASTM D2000 BG in the Rubber Sheets & Rolls department at Lowes.com
![Rubber (BUNA-N) Gasket for Bell Jar, 10 inch, for SPI Vacu-Prep II, Polaron Models E6300 and E6700 | 12207-AB | SPI Supplies Rubber (BUNA-N) Gasket for Bell Jar, 10 inch, for SPI Vacu-Prep II, Polaron Models E6300 and E6700 | 12207-AB | SPI Supplies](https://www.2spi.com/catalog/items/12208-AB.jpg)