Operating range
| Pressure [pmax]: | 40 bar | 
Temperature: t = 0… +550 °C
Max. pressure depending on installation situation
In inert atmosphere (material value) up to 550 °C
In steam boiler applications up to 250 °C
Main application
- Steam Boilers
 - Vessels in round and oval shapes
 
Gasket Characteristics
Surface pressure: min. 10 N/mm2, max. 35 N/mm2
 Recommended boiler heating gradient: max. 2 °C / min
 
 Pay attention to assembly instruction (added to each single gasket)!
Suitable for
- Seal for steam boilers and containers
 - Storable
 
MANHOLE SEAL D 4.4
Pressure-resistant and dimensionally stable gasket made of expanded graphite
						Characteristics
- This new gasket material consists of a temperature-, corrosion-, and chemical-resistant expanded graphite matrix.
 - No aging
 - Good adaptability to flange irregularities
 - Excellent suitability for changing temperatures
 - No hardening
 
Form of delivery
Standard dimensions (mm)
Special shapes and other seal thicknesses are available upon request.
| 81 x 111 x 14 x 6 | 101 x 151 x 14 x 6 | 116 x 166 x 14 x 6 | 151 x 201 x 14 x 6 | 282 x 382 x 23 x 6 | 312 x 412 x 23 x 6 | 
|---|---|---|---|---|---|
| 81 x 121 x 14 x 6 | 121 x 151 x 14 x 6 | 202 x 302 x 23 x 6 | 297 x 397 x 23 x 6 | 322 x 422 x 23 x 6 | 352 x 452 x 23 x 6 | 
| 91 x 121 x 14 x 6 | 111 x 151 x 14 x 6 | 121 x 161 x 14 x 6 | 222 x 322 x 23 x 6 | 302 x 402 x 23 x 6 |