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Navigation:
CCP Home > Products
> Pipe & Pipeline Flange Insulation Products
> Central Plastics
The Jock™
O-Ring Sealing Gasket
By
Georg Fischer Central Plastics Company

Problems solved by
Jock O-Ring Sealing Gaskets
|
The
Problem: |
Leaking
Flanges. |
|
The
Solution: |
Use high energy
O-ring elastomers which maintain constant sealing force. This sealing element
encapsulation prevents gasket blowout, and the high quality retainer and seal materials
eliminate fluid permeation. |
|
The
Result: |
Positive Seals
and Zero Environmental Leakage. |
|
The
Reason: |
Jock O-Ring
Gaskets. |
|
The
Problem: |
Catastrophic
Fire Failure. |
|
The
Solution: |
Attain complete
contact of flange and retainer permitting only micro-exposure of seals to service fluid
and environment. |
|
The
Result: |
PLongest Fire
Life of any Insulating Gasket. |
|
The
Reason: |
Jock O-Ring
Gaskets. |
|
The
Problem: |
High
Maintenance and Installation Costs. |
|
The
Solution |
Achieve a
positive seal utilizing the elastic memory of the confined seal. This insures zero ASME
"M" and "Y" factors, producing reliable seals without tremendous bolt
loads. Undamaged insulating washers mean fewer shorts. |
|
The
Result: |
Fewer Service
Calls due to leaking and shorting flanges. |
|
The
Reason: |
Jock O-Ring
Gaskets. |
|
The
Problem: |
Mismatched,
Misaligned, and damaged RTJ Flanges. |
|
The
solution: |
Use a narrow
self-energized seal capable of withstanding high fluid pressure. |
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The
Result: |
Maintenance
Versatility and Positive Sealing in difficult situations. |
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The
Reason: |
Jock O-Ring |

Overcoming Mismatching &
Misaligning Problems


Closeup of Type
"E" & Type "F" Sealing Gaskets

Gasket Material
Specifications
| Pipe Size |
Pressure |
Retainer Material, Insulating |
Sealing Elements |
|
All standard sizes
1/2" and larger are stock items. |
All ANSI, DIN and API
rated flanges are stock items. |
Phenolic
(standard)
225oF (107oC) |
Buna-N
-60oF to +250oF |
|
Odd sizes and
shapes are available on special order with short delivery time. |
Pressures from hard
vacuum to 50,000 psi and higher. |
Phenolic
(high temp.)
350oF (177oC) |
Viton®
-40oF to +450oF |
Viton® is a registered trademark
of DuPont Dow Elastomers.

Sleeve & Washer Material
Specifications
| Sleeve Material |
Washer Material |
|
Polyethylene: 180oF
(80oC)
1-piece sleeve & washer: 250oF (121oC)
Phenolic: 250oF (121oC)
Mylar: 300oF (149oC)
High temp. sleeve: 450oF (232oC) |
Phenolic: 250oF
(121oC)
1-piece sleeve & washer: 250oF (121oC)
High temp. sleeve: 450oF (232oC)
Glass phenolic: 350oF (177oC) |

How to Order
To order a flange insulation kit, please indicate
the following:
- Quantity
- Pipe size (nominal)
- Pressure rating (ANSI, DIN, API)
- Gasket type (E or F)
- Retainer material
- Sealing Element
- Single or double washer sets (SW or DW)
- Sleeve material

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