About The High Pressure Seal - Ametek CHANDLER ENGINEERING 7360V Instruction Manual

P-2 PREFACE
Heater power:
Heater type:
Heater control:
Power Requirements
Input voltage:
Input power:
Input frequency: 50 or 60 Hz
Mechanical
Height:
Width:
Length:
Weight:
Pressure vessel material: AISI/SAE 15-5 PH stainless steel
Environmental
Operating temperature:
Operating humidity:
Air and water supply
Compressed air: 75-125 psig/517 - 862 kPa
Water:
Fittings:

About the High Pressure Seal

The cylinder and plug used in the Model 7360V Vertical Curing Chamber were designed for
reliable sealing and ease of use. The principle behind the seal design is outlined below. You
may find it convenient to refer to Figure 1 for further clarification.
The primary high-pressure sealing element is the metal seal ring (2). As the pressure inside
the cylinder increases, the seal ring is wedged between the plug (1) and the cylinder forming
a tight metal-to-metal seal. One feature of this seal is that as pressure increases, the seal
becomes tighter.
At low pressures, however, the metal seal ring will not make an effective seal. For this
reason, an internal O-ring (3) is added below the metal seal ring (2). The internal O-ring is
used to make the initial seal. When the pressure inside the cylinder is increased, the internal
O-ring (3) is forced against the metal seal ring (2), which wedges between the plug and
cylinder and creates the metal-to-metal seal. The retaining ring (4) is simply used to secure
the metal seal ring and the internal O-ring in place.
During high temperature tests (exceeding 500°F/260°C) the internal O-ring may be damaged
to the extent that it can no longer form an effective seal. This will not affect the metal-to-
metal seal in any way as long as the pressure in the cylinder is maintained above 1600 psi/11
MPa.
3000 Watts
External, 2 piece, mica band-heater
Solid-state relay with temperature feedback
220 ± 10% VAC, single phase
3.2 kVA
20 in/51 cm
21.5 in/55 cm
19 in/48 cm
150 lb/68 kg
32°F - 105°F/0°C - 40°C
0 - 95% non-condensing
20 - 40 psig/135 - 275 kPa
1/4 in/6.4 mm