# STEMA AS — Bonded Seals / Dowty

STEMA AS is a Norwegian supplier of Bonded Seals for industry, hydraulics and OEM applications. The catalogue covers Standard, Self-Centring and GS. Specify series, thread size, reference and dimensions from the drawing.

STEMA AS er en norsk leverandør av Bonded Seals til industri, hydraulikk og OEM. Katalogen omfatter Standard, Self-Centring og GS. Oppgi serie, gjengestørrelse, referanse og mål fra tegningen.

## Product pages
- Norwegian: https://stemaas.com/produkter/bonded-seals
- English: https://stemaas.com/en/products/bonded-seals

## Selection
Standards / dimensional references: BSP, metric, SAE; GS ISO 6162 / ISO 6164
Material options: NBR, FKM, HNBR, EPDM
Confirm exact size, compound, medium, temperature, pressure, duty and quantity. No stock or delivery promise is implied.

## Documentation
Specify requirements for EN 10204 3.1, traceability or other certificates in your enquiry. Available documentation is confirmed for the specific item and order; catalogue inclusion does not mean every product is supplied with a 3.1 certificate.
Oppgi krav til EN 10204 3.1, sporbarhet eller andre sertifikater ved forespørsel. Tilgjengelig dokumentasjon bekreftes for den konkrete varen og ordren; katalogen innebærer ikke at alle produkter leveres med 3.1-sertifikat.

## Special supply options
EPDM / AISI 316 Bonded Seals available on request; dimensions and configuration confirmed per item.
Oxygen cleaning with a cleaning certificate available on request for specified items. ASTM G93 Level B has been offered for FKM / AISI 316. Inspection and packaging agreed per order; cleaning is not oxygen-service approval. EPDM and oxygen cleaning are separate options.
https://stemaas.com/en/oxygen-cleaning
https://stemaas.com/oksygenrensing

## Bonded Seals / Dowty – BSP and metric dimensions
Source PDF: https://stemaas.com/STEMA%20Bonded%20Seals%20%E2%80%93%20Technical%20Catalogue.pdf
Readable reference: https://stemaas.com/en/datasheets/bonded-seals

### Self-Centring BSP (PDF page 4)

| Ref. | BSP | Bolt | A +0.13/-0.00 | B ±0.10 | C +0.10/-0.00 | D | E | F +0.00/-0.20 | Minimum burst pressure (bar) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 820 | 1/8 | 3/8 | 15.88 | 11.84 | 10.37 |  |  | 8.56 | 1500 |
| 821 | 1/4 | 1/2 | 20.57 | 15.21 | 13.74 |  | 2.03 | 11.45 | 1550 |
| 823 | 3/8 | - | 23.80 | 18.75 | 17.28 |  | 2.18 | 14.96 | 1260 |
| 825 | 1/2 | 13/16 | 28.58 | 23.01 | 21.54 | 0.35 |  | 18.64 | 1150 |
| 826 | 5/8 | 7/8 | 31.75 | 24.97 | 23.49 | 0.51 | 2.34 | 20.60 | 1250 |
| 827 | 3/4 | 1 | 34.93 | 28.53 | 27.05 |  | 2.60 | 24.13 | 1060 |
| 829 | 7/8 | 1 3/16 | 38.10 | 32.29 | 30.81 |  |  | 27.89 | 900 |
| 830 | 1 | 1 5/16 | 42.80 | 36.88 | 33.89 |  |  | 30.30 | 790 |
| 832 | 1 1/4 | 1 5/8 | 52.38 | 45.93 | 42.93 |  | 3.25 | 38.96 | 690 |
| 833 | 1 1/2 | 1 7/8 | 58.60 | 51.39 | 48.44 |  | 3.51 | 44.86 | 690 |
| 836 | 2 | - | 73.03 | 63.63 | 60.58 |  |  | 56.67 | 700 |

### Imperial (PDF page 5)

| Ref. | BSP | Bolt | A +0.13/-0.00 | B ±0.13 | C ±0.13 | D | E | Minimum burst pressure (bar) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 001 |  | 6BA | 6.35 | 4.09 | 3.05 |  |  | 2150 |
| 002 |  | 4BA | 7.26 | 5.26 | 4.12 |  |  | 1570 |
| 003 |  | 2BA | 8.38 | 6.35 | 5.21 |  |  | 1375 |
| 004 |  | 1/4 | 13.21 | 8.00 | 6.86 | 0.2/0.38 | 1.22/1.37 | 2450 |
| 005 |  | 1/4 | 13.34 | 9.53 | 6.99 |  |  | 1700 |
| 006 |  | 5/16 | 13.34 | 9.53 | 8.31 |  |  | 1700 |
| 007 |  | 5/16 | 14.22 | 10.04 | 8.64 |  |  | 1750 |
| 020 | 1/8 | 3/8 | 15.88 | 11.84 | 10.37 |  |  | 1500 |
| 008 |  | 0.4 | 18.36 | 12.45 | 11.26 |  |  | 1950 |
| 009 |  | 7/16 | 19.05 | 13.08 | 11.69 |  |  | 1900 |
| 021 | 1/4 | 1/2 | 20.57 | 15.21 | 13.74 |  | 2.03/2.18 | 1550 |
| 010 |  | 9/16 | 22.23 | 16.39 | 14.86 |  |  | 1575 |
| 022 |  | 0.6 | 22.23 | 17.30 | 15.83 |  |  | 1310 |
| 011 |  | 5/8 | 25.40 | 18.75 | 16.51 |  |  | 1550 |
| 023 | 3/8 |  | 23.80 | 18.75 | 17.28 |  |  | 1260 |
| 012 |  | 11/16 | 25.40 | 19.69 | 18.16 |  |  | 1320 |
| 024 |  | 3/4 | 26.92 | 21.21 | 19.69 |  |  | 1260 |
| 025 | 1/2 | 13/16 | 28.58 | 23.01 | 21.54 |  |  | 1150 |
| 026 | 5/8 | 7/8 | 31.75 | 24.97 | 23.49 |  |  | 1250 |
| 013 |  | 15/16 | 33.27 | 26.04 | 24.26 | 0.25/0.51 | 2.34/2.60 | 1275 |
| 027 | 3/4 | 1 | 34.93 | 28.53 | 27.05 |  |  | 1060 |
| 028 |  | 1 1/16 | 38.61 | 30.61 | 27.82 |  |  | 1250 |
| 014 |  | 1 1/8 | 36.58 | 30.86 | 29.33 |  |  | 900 |
| 029 | 7/8 | 1 3/16 | 38.10 | 32.29 | 30.81 |  |  | 900 |
| 015 |  | 1 1/4 | 41.40 | 35.69 | 32.64 |  |  | 810 |
| 030 | 1 | 1 5/16 | 42.80 | 36.88 | 33.89 |  |  | 790 |
| 031 | 1 | 1 5/16 | 42.80 | 36.88 | 33.89 |  |  | 810 |
| 016 |  | 1 3/8 | 44.45 | 38.99 | 35.94 |  |  | 700 |
| 017 |  | 1 1/2 | 47.75 | 42.04 | 38.96 |  |  | 700 |
| 032 | 1 1/4 | 1 5/8 | 52.38 | 45.93 | 42.93 |  |  | 690 |
| 018 |  | 1 3/4 | 57.15 | 48.39 | 45.34 |  |  | 875 |
| 033 | 1 1/2 | 1 7/8 | 58.60 | 51.39 | 48.44 |  | 3.25/3.51 | 690 |
| 019 |  | 2.0 | 63.50 | 54.74 | 51.69 |  |  | 780 |
| 034 | 1 3/4 | 2 1/8 | 69.85 | 58.30 | 54.89 |  |  | 950 |
| 035 |  | 2 1/4 | 70.36 | 61.09 | 58.04 |  |  | 760 |
| 036 | 2 |  | 73.03 | 63.63 | 60.58 |  |  | 700 |
| 037 |  | 2 1/2 | 77.72 | 67.44 | 64.39 |  |  | 770 |
| 038 | 2 1/4 |  | 79.50 | 69.98 | 66.68 |  |  | 690 |
| 039 | 2 1/2 |  | 90.17 | 79.38 | 76.08 |  |  | 700 |
| 079 | 3 |  | 101.47 | 92.84 | 89.09 |  |  | 530 |

### German metric (PDF page 6)

| Thread ref. | Size ref. | A +0.13/-0.00 | B ±0.13 | C +0.10 | D +0.25/-0.00 | E | Minimum burst pressure (bar) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| M4 | 202 | 7.00 | 5.40 | 4.5 |  |  | 1270 |
| M5 | 203 | 9.00 | 6.80 | 5.70 |  |  | 1400 |
| M5.5 | 205 | 9.2 | 7.20 | 6.20 |  |  | 1220 |
| M6 | 206 | 10.00 | 8.00 | 6.70 | 0.30 | 0.90 | 1130 |
| M6 | 207 | 11.00 | 8.20 | 6.70 |  | 1.10 | 1510 |
| M8 | 212 | 13.00 | 10.00 | 8.70 |  |  | 1330 |
| M8 | 213 | 14.00 | 10.40 | 8.70 |  |  | 1550 |
| M10 | 217 | 16.00 | 12.40 | 10.70 |  |  | 1350 |
| M10 | 218 | 18.00 | 12.40 | 10.70 |  |  | 1880 |
| M11 | 221 | 19.10 | 13.50 | 11.80 |  |  | 1770 |
| M12 | 222 | 18.00 | 14.40 | 12.70 |  |  | 1250 |
| M12 | 223 | 20.00 | 14.00 | 12.70 |  |  | 1680 |
| M13 | 225 | 22.00 | 15.40 | 13.70 |  | 1.40 | 1810 |
| M14 | 227 | 22.00 | 16.40 | 14.70 |  | 1.60 | 1510 |
| M16 | 229 | 24.00 | 18.40 | 16.70 |  |  | 1400 |
| M17 | 230 | 24.00 | 19.20 | 17.40 | 0.40 |  | 1150 |
| M17.5 | 231 | 24.70 | 20.10 | 18.00 |  |  | 1070 |
| M18 | 232 | 26.00 | 20.40 | 18.70 |  |  | 1275 |
| M20 | 233 | 28.00 | 22.50 | 20.70 |  |  | 1150 |
| M21 | 234 | 28.70 | 23.30 | 21.50 |  | 2.35/2.65 | 1080 |
| M22 | 236 | 30.00 | 24.40 | 22.70 |  | 1.90/2.10 | 1100 |
| M24 | 238 | 32.00 | 26.40 | 24.70 |  |  | 1050 |
| M26 | 239 | 35.00 | 28.40 | 26.70 |  | 1.90 | 1050 |
| M27 | 240 | 36.00 | 29.00 | 27.20 |  | 2.10 | 1130 |
| M33 | 243 | 42.00 | 35.80 | 33.70 |  |  | 900 |
| M33 | 244 | 43.00 | 36.40 | 34.30 |  |  | 880 |
| M42 | 247 | 53.00 | 44.00 | 42.70 |  | 2.85 | 940 |
| M48 | 248 | 59.00 | 50.80 | 48.70 |  | 3.15 | 800 |

### French metric (PDF page 7)

| Thread ref. | Size ref. | A +0.13/-0.00 | B ±0.10 | C +0.10 | D +0.25/-0.00 | E | Minimum burst pressure (bar) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| M4 | 302 | 9 | 6.00 | 4.60 |  |  | 2000 |
| M5 | 303 | 10 | 7.00 | 5.60 |  | 0.90 | 1780 |
| M6 | 304 | 11 | 8.00 | 6.60 |  | 1.10 | 1680 |
| M6 | 306 | 11.4 | 8.40 | 7.00 | 0.30 |  | 1540 |
| M8 | 307 | 13 | 10.00 | 8.60 |  |  | 1330 |
| M10 | 310 | 17 | 12.10 | 10.70 |  |  | 1730 |
| M12 | 313 | 19 | 14.10 | 12.70 |  | 1.40 | 1530 |
| M13 | 315 | 20.10 | 15.20 | 13.80 | 0.40 | 1.60 | 1440 |
| M14 | 316 | 21 | 16.10 | 14.70 |  |  | 1370 |
| M16 | 317 | 23 | 18.10 | 16.70 | 0.30 |  | 1240 |
| M18 | 320 | 27 | 20.40 | 18.70 |  |  | 1450 |
| M20 | 321 | 29 | 22.40 | 20.70 |  |  | 1340 |
| M21 | 323 | 30 | 23.40 | 21.70 |  |  | 1290 |
| M22 | 324 | 31 | 24.40 | 22.70 |  | 1.90 | 1240 |
| M24 | 326 | 33 | 26.40 | 24.70 |  | 2.10 | 1160 |
| M26 | 327 | 35.30 | 28.70 | 27.00 |  |  | 870 |
| M27 | 328 | 36 | 29.40 | 27.70 |  |  | 1060 |
| M28 | 329 | 36 | 30.30 | 28.60 | 0.40 |  | 730 |
| M30 | 331 | 39 | 32.40 | 30.70 |  |  | 970 |
| M33 | 332 | 42 | 35.40 | 33.70 |  |  | 900 |
| M36 | 333 | 48 | 39.60 | 37.00 |  |  | 1010 |
| M39 | 334 | 51 | 42.60 | 40.00 |  |  | 950 |
| M42 | 335 | 54 | 45.60 | 43.00 |  | 2.40 | 890 |
| M45 | 336 | 57 | 48.60 | 46.00 |  | 2.60 | 860 |
| M48 | 337 | 60 | 51.60 | 49.00 |  |  | 790 |

### BSPF pipe connections (PDF page 7)

| BSPF thread | Size ref. | A -0.2 | B +0.2 | C +0.2 | D +0.25/-0.00 | E ±0.15 | Minimum burst pressure (bar) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1/16 | 519 | 12.7 | 9.9 | 8.3 |  |  | 1100 |
| 1/8 | 510 | 14.7 | 12 | 10.4 |  |  | 930 |
| 1/4 | 511 | 18.7 | 15.75 | 13.85 |  | 1.25 | 793 |
| 3/8 | 512 | 22.7 | 19.25 | 17.35 |  |  | 775 |
| 1/2 | 513 | 26.7 | 23.55 | 21.65 | 0.25 |  | 586 |
| 3/4 | 514 | 32.5 | 29.2 | 27.3 |  |  | 500 |
| 1 | 515 | 39.5 | 36.1 | 34.2 |  |  | 414 |
| 1 1/4 | 516 | 49.5 | 44.7 | 42.8 |  | 2 | 500 |
| 1 1/2 | 517 | 55.5 | 50.6 | 48.7 |  |  | 434 |
| 2 | 518 | 68.5 | 62.4 | 60.5 |  |  | 448 |

Use each source drawing and its letter definitions. Different series are not interchangeable. Confirm tolerances and application separately.

## GS Bonded Seals – ISO 6162 and ISO 6164
Source PDF: https://stemaas.com/STEMA%20GS%20Bonded%20Seals%20%E2%80%93%20ISO%206162%20%20ISO%206164.pdf
Readable reference: https://stemaas.com/en/datasheets/gs-bonded-seals

### Metric GS · ISO 6162-2 (PDF page 1)

| Size | STD Part No. | SS Part No. | H (mm) | OD (mm) | ID (mm) |
| --- | --- | --- | --- | --- | --- |
| 1/2" | 0823 | 0823SS | 2.03 | 23.80 | 17.28 |
| 3/4" | 1213 | 1213SS | 2.34 | 33.27 | 24.26 |
| 1" | 1629 | 1629SS | 2.34 | 34.93 | 27.05 |
| 1 1/4" | 2030 | 2030SS | 3.25 | 42.80 | 33.89 |
| 1 1/2" | 2432 | 2432SS | 3.25 | 52.38 | 42.93 |
| 2" | 3219 | 3219SS | 3.25 | 63.50 | 51.69 |
| 2 1/2" | 4037 | 4037SS | 3.25 | 75.00 | 64.39 |
| 3" | 4839 | 4839SS | 3.25 | 90.17 | 76.08 |

### ANSI GS · ISO 6162-2 (PDF page 1)

| Size | STD Part No. | SS Part No. | H (mm) | OD (mm) | ID (mm) |
| --- | --- | --- | --- | --- | --- |
| 1/2" | 0821 | 0821SS | 2.00 | 15.88 | 10.37 |
| 3/4" | 0823 | 0823SS | 2.03 | 23.80 | 17.28 |
| 1" | 1633 | 1633SS | 2.34 | 28.58 | 21.54 |
| 1 1/4" | 2042 | 2042SS | 2.34 | 39.00 | 31.00 |
| 1 1/2" | 2448 | 2448SS | 3.25 | 44.45 | 35.94 |
| 2" | 3260 | 3260SS | 3.25 | 55.50 | 46.50 |
| 2 1/2" | 4073 | 4073SS | 3.25 | 69.85 | 54.89 |
| 3" | 4888 | 4888SS | 4.00 | 83.80 | 70.00 |

### Metric GS · ISO 6164 (PDF page 2)

| Size | STD Part No. | SS Part No. | H (mm) | OD (mm) | ID (mm) |
| --- | --- | --- | --- | --- | --- |
| 2" | 3219 | 3219SS | 3.25 | 63.50 | 51.69 |
| 2 1/2" | 4037 | 4037SS | 3.25 | 75.00 | 64.39 |
| 3" | 4839 | 4839SS | 3.25 | 90.17 | 76.08 |
| 4" | 5644 | 5644SS | 4.00 | 110.00 | 95.00 |
| 4 1/2" | 6000 | 6000SS | 4.00 | 126.00 | 108.00 |
| 5" | 6455 | 6455SS | 5.00 | 143.70 | 127.00 |
| 6" | 8001 | 8001SS | 8.00 | 181.00 | 155.00 |
| 8" | 9600 | 9600SS | 9.00 | 240.00 | 205.00 |

### ANSI GS · ISO 6164 (PDF page 2)

| Size | STD Part No. | SS Part No. | H (mm) | OD (mm) | ID (mm) |
| --- | --- | --- | --- | --- | --- |
| 2" | 3260 | 3260SS | 3.25 | 55.50 | 46.50 |
| 2 1/2" | 4073 | 4073SS | 3.25 | 69.85 | 54.89 |
| 3" | 4888 | 4888SS | 4.00 | 83.80 | 70.00 |
| 4" | 5644 | 5644SS | 4.00 | 110.00 | 95.00 |

Use each source drawing and its letter definitions. Different series are not interchangeable. Confirm tolerances and application separately.

## Contact
STEMA AS, Nesgata 24, 2004 Lillestrøm, Norway
post@stemaas.com | +47 63 80 44 70
https://stemaas.com/en/contact