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Bonded Seals

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
Size Range
1/2” to 8”
Working Pressure
Up to 690 BARS
Design Standard
ISO 6162-2 / ISO 6164
Material
SS302
Size Available
  • ANSI 36.10
  • ANSI 36.19
  • Metric size
bonded seals Catalogue
GS Bonded Seals.pdf
File Size: 145 kb
File Type: pdf
Download File


What are Bonded Seals

Clamping JawBonded 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. 

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.
 
  • 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. ​
Picture
Bonded Seal Drawing
Size
SS Part No.
STD Part No.
D
D1
S
1/2"
0821SS
0821
15.88
10.37
2.00
3/4"
0823SS
0823
23.80
17.28
2.03
1"
1633SS
1633
28.58
21.54
2.34
1 1/4"
2042SS
2042
39.00
31.00
3.25
1 1/2"
2448SS
2448
44.45
35.94
3.25
2"
3260SS
3260
55.50
46.50
3.25
2 1/2"
4073SS
4073
69.85
54.89
3.25
3"
4888SS
4888
83.90
70.00
4.00
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
PictureBonded 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. 


Bonded seals Catalogue
GS Bonded Seals.pdf
File Size: 145 kb
File Type: pdf
Download File


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