Reset All
Bung Welds
Bung welds are similar to a weld boss making a transition between a pipe or a vessel, and a fitting. Whenever a process vessel and a fitting need to join, a bung weld is a common solution. Bung welds are typically welded to a flat or curved surface of a wall of the process chamber, or to a side of a pipe. Once welded to the vessel, bung welds provide a permanent threaded port where fittings can be easily installed. Bung welds are not to be confused with socket welds or butt welds. The difference between a bung weld and a socket weld is bung welds have female threads while socket welds have plain bores to be welded to pipe ends. Threads can be NPT, Metric, SAE, BSW, or can also be made custom.
Encole
NPT Weld-On Bung, 316 Stainless Steel

Weld-on bung with FNPT threads conforming to ASME B1.20.1. The bung is ready to be welded to a flat wall of the process vessel. For curved surfaces the bung can be machined to fit the curvature. Made in the USA from domestically sourced AISI 316 stainless steel. Can be welded to any 300-series stainless steel.
This product is recommended as a matching pair to any NPT sight glasses or fittings.
Nominal Pipe Size | Thread | Material | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|
3/8” | NPT 3/8 | AISI 316 Stainless | 101414 | 811E701 | RFQ | |
1/2” | NPT 1/2 | AISI 316 Stainless | 101415 | 811E702 | RFQ | |
3/4” | NPT 3/4 | AISI 316 Stainless | 101416 | 811E703 | RFQ | |
1” | NPT 1 | AISI 316 Stainless | 101417 | 811E704 | RFQ | |
1-1/4” | NPT 1-1/4 | AISI 316 Stainless | 101418 | 811E705 | RFQ | |
1-1/2” | NPT 1-1/2 | AISI 316 Stainless | 101293 | 811E706 | RFQ | |
2” | NPT 2 | AISI 316 Stainless | 101294 | 811E707 | $ 61.80 each |
Encole
SAE J1926 Weld-On Bung, 316 Stainless

SAE J1926-1 weld-on bung for accepting SAE J514 boss. The bung is ready to be welded to a flat wall of a process vessel. For curved surfaces the bung can be machined to fit the curvature. Made in the USA from domestically sourced AISI 316 stainless steel. Can be welded to any 300-series stainless steel.
Nominal Pipe Size | Thread | Material | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|
SAE-16 | 1-5/16-12 | AISI 316 Stainless | 101289 | 812E401 | RFQ | |
SAE-20 | 1-5/8-12 | AISI 316 Stainless | 101290 | 812E402 | RFQ | |
SAE-24 | 1-7/8-12 | AISI 316 Stainless | 101291 | 812E403 | $ 148.90 each | |
SAE-32 | 2-1/2-12 | AISI 316 Stainless | 101292 | 812E404 | $ 174.60 each |