Pipe Thread Information
SEALEXCEL® pipe fittings are available with NPT (National Pipe Taper),BSP/ISO (British Standard Pipe/International Standards Organisation) and SAE/MS Straight Thread.
Tapered Threads
| Specification (s) | Type | Part No. Or Suffix Designation | Sealing Method |
| NPT ANSI B1.20.1 |
M/F | N | Seal is made on the thread. Thread sealant is required |
| ISO 7/1 BS 21 JIS B0203 DIN 2999 |
M/F M/F M/F Male |
RT | Seal is made on the thread. Thread sealant is required |
Parallel Threads
| Specification (s) | Type | Part No. Or Suffix Designation | Sealing Method |
| ISO 228/1+2 BS 2779 JIS B0203 |
Male | RP | Metal-to metal sealing to DIN 3852, Form B. |
| ISO 228/1+2 BS 2779 JIS B0202 |
Male | RS | Utilizes a sealing washer to provide sealing. Reference DIN 3852, Form A. |
| ISO 228/1+2 BS 2779 JIS B0202 |
Female | RG | Sealing form meets DIN 3852, Form Y. |
| BS2779 ISO 288/1+2 with Elastic Sealing |
Male | EO | Sealing form meets DIN 3852, Part 2, Form E. |
| SAE J514 | Male | SAE | Sealing with ‘O’ Ring |
Size Code Description
| Inches | |||
| Size | Code | Size | Code |
| 1/8 | 2 | 3/4 | 12 |
| 1/4 | 4 | 7/8 | 14 |
| 3/8 | 6 | 1 | 16 |
| 7/16 | 7 | 1-1/16 | 17 |
| 1/2 | 8 | 1-5/16 | 21 |
| 9/16 | 9 | ||
| 5/8 | 10 | ||
Material Code Description
| Description of material code | |
| SS316 | E |
| SS316L | EL |
| ‘O’ Ring Viton | V |
| ‘O’ Ring Buna | N |