Bonded Seals
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Bonded Seals also called retain rings are used in high-pressure pipeline systems to ensure that there are no leakages in jointed regions.
Bonded seals which are also called GS-Hydro rings were designed to function in systems operating at a pressure of 350 - 450 bars. Special designs can be made however can be made upon request, that would operate without fail in higher pressure systems. The making of the Bonded Seals follows the ISO 6164 as well as the ISO 6162-2 standard. Refer to the table below for the specification of bonded Seals |
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Size Range |
1/2” to 8” |
Working Pressure |
Up to 690 BARS |
Design Standard |
ISO 6162-2 / ISO 6164 |
Material |
SS302 |
Size Available |
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bonded seals Catalogue
| GS Bonded Seals.pdf |
What are Bonded Seals
Bonded Seals
1. What are Stauff Filler Breathers
Bonded seal is a type of sealing accessory used in pipeline systems where there is no option for welding. It is made of NBR and a ring made of metal. Bonded seals are fondly used in offshore applications, marine and mining facilities. They come in different diameters which could be as low as half an inch to 8 inches. Upon special request, sizes that are outside this range can be produced.
Bonded seal is a type of sealing accessory used in pipeline systems where there is no option for welding. It is made of NBR and a ring made of metal. Bonded seals are fondly used in offshore applications, marine and mining facilities. They come in different diameters which could be as low as half an inch to 8 inches. Upon special request, sizes that are outside this range can be produced.
2. What are Bonded Seals made of?
Bonded seals are typically made of two materials joined together: natural rubber (NBR) and a ring made of SS302.
Bonded seals are typically made of two materials joined together: natural rubber (NBR) and a ring made of SS302.
- Nitrile rubber: Nitrile runner is an elastomer material's whole property that makes it suitable for sealing. Apart from the fact that it can withstand a wide range of temperatures to the tune of -30⁰F to +250⁰F (-35⁰C to +120⁰C), the material also possesses great resistance to corrosion from petroleum products, wear, and resistance to fire. NBR is also made to have an increased resistance to harsh weather conditions.
- Stainless steel (SS302 material): Stainless steel is an alloy of copper and iron. The material is known for its high strength. However, the SS302 material does not only contain iron and carbon but also contains other materials such as Chromium which makes it resistant to corrosion. This makes steel applicable in harsh weather conditions without fail. Refer to the table below to see the materials in the SS302 material and the percentage content.
Elements |
Content (%) |
Chromium (Cr) |
18.2 |
Manganese (Mn) |
1.6 |
Carbon (C) |
0.06 |
Iron (Fe) |
Balance |
Nickel (Ni) |
8.5 |
Silicon (Si) |
0.5 |
3. What are the sizes available for the Bonded Seal?
Bonded Seals can be found based on different sizes: ANSI 36.10, ANSI 36.19, and metric sizes.
Kindly refer to the table below to find the dimensions of the bonded seals for ANSI 36.10 and ANSI 36.19 pipes based on ISO 6162-2 standard.
Bonded Seals can be found based on different sizes: ANSI 36.10, ANSI 36.19, and metric sizes.
Kindly refer to the table below to find the dimensions of the bonded seals for ANSI 36.10 and ANSI 36.19 pipes based on ISO 6162-2 standard.
Bonded Seal Drawing
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Kindly refer to the table below to find the dimensions of the bonded seals for ANSI 36.10 and ANSI 36.19 pipes based on ISO 6164 standards.
Size |
SS Part No. |
STD Part No. |
D |
D1 |
S |
2" |
3260SS |
3260 |
55.50 |
46.50 |
3.25 |
2 1/2" |
4073SS |
4073 |
69.85 |
54.89 |
3.25 |
3" |
4888SS |
4888 |
83.80 |
70.00 |
4.00 |
4" |
5644SS |
5644 |
110.00 |
95.00 |
4.00 |
Kindly refer to the table below to find the dimensions of the bonded seals for metrics size based on ISO 6162-2 standard.
Size |
SS Part No. |
STD Part No. |
D |
D1 |
S |
1/2" |
0823SS |
0823 |
23.80 |
17.28 |
2.03 |
3/4" |
1213SS |
1213 |
33.27 |
24.26 |
2.34 |
1" |
1629SS |
1629 |
34.93 |
27.05 |
2.34 |
1 1/4" |
2030SS |
2030 |
42.90 |
33.89 |
3.25 |
1 1/2" |
2432SS |
2432 |
52.38 |
42.93 |
3.25 |
2" |
3219SS |
3219 |
63.50 |
51.69 |
3.25 |
2 1/2" |
4037SS |
4037 |
75.00 |
64.39 |
3.25 |
3" |
4839SS |
4839 |
90.17 |
76.08 |
3.25 |
Kindly refer to the table below to find the dimensions of the bonded seals for metrics size based on ISO 6164 standard.
Size |
SS Part No. |
STD Part No. |
D |
D1 |
S |
2" |
3291SS |
3291 |
63.50 |
51.69 |
3.25 |
2 1/2" |
4037SS |
4037 |
75.00 |
64.39 |
3.25 |
3" |
4839SS |
4839 |
90.17 |
76.08 |
3.25 |
4" |
5644SS |
5644 |
110.00 |
95.00 |
4.00 |
4 1/2" |
6000SS |
6000 |
126.00 |
108.00 |
4.00 |
5" |
6455SS |
6455 |
143.70 |
127.00 |
5.00 |
6" |
8001SS |
8001 |
181.00 |
155.00 |
8.00 |
8" |
9600SS |
9600 |
240.00 |
205.00 |
9.00 |
Bonded Seals
4. What are Dipsticks used for in Breathers?
Using bonded seals is not difficult. It is however advised to follow the guidelines below to have firmer pipeline connections.
Step 1: Lubricate the edges of the seal with Gleitmo 805 grease.
Step 2: Confirm that the pipe ends fit the seal size you are using.
Step 3: Depending upon the end type of the connection, lubricate the sides of the flange or the bolt head in whichever case.
Step 4: Tighten the bolt according to its recommended torque value.
Please take note that it should be noted that the bolts are expected to be tightened right after the ends are lubricated. You can apply the cross tightening technique, first with 30% of the torque value and follow by 70% afterward.
Using bonded seals is not difficult. It is however advised to follow the guidelines below to have firmer pipeline connections.
Step 1: Lubricate the edges of the seal with Gleitmo 805 grease.
Step 2: Confirm that the pipe ends fit the seal size you are using.
Step 3: Depending upon the end type of the connection, lubricate the sides of the flange or the bolt head in whichever case.
Step 4: Tighten the bolt according to its recommended torque value.
Please take note that it should be noted that the bolts are expected to be tightened right after the ends are lubricated. You can apply the cross tightening technique, first with 30% of the torque value and follow by 70% afterward.
Bonded seals Catalogue
| GS Bonded Seals.pdf |
