DIMERFLEX OT metal jacketed gaskets consist of a soft sealing filler metal packaging and a solid metal jacket. The sealing filler ensures compressibility and flexibility, while the metal jacket ensures adequate compressive strength and resistance to blow-out.
Depending on the jacket type, the metal jacketed gaskets can stand up to 30 % of deviation from their initial thickness, which is very useful in case of irregular or faulty flange rims.
The gaskets can be produced from various materials and in different shapes and they are especially suitable for the application in heat exchangers.
It is the material variability of the sandwich jacket that allows perfect adaptation to any operating conditions.
DIMERFLEX OT gaskets are delivered in a variety of designs including integrated or welded bars, or they can be produced in square, rectangle, oval, elliptical or other shapes.
Structure - DIMERFLEX OT2
1a-cover metal material
1b-top cover metal material
1c-another metal cover material
2-soft filler encapsulated in metallic material
s-total thickness
s1-thickness metallic cover
d1-inner diam. of sealing surface and metal coating
d2-outer diam. of sealing surface and metal coating
Basic profiles
DIMERFLEX OT0
soft mat. encapsulated in metallic material
DIMERFLEX OT1
oval cover with top metallic layer (SC)
DIMERFLEX OT2
oval cover with two metallic layers
DIMERFLEX OT3
oval cover with inner insertion
DIMERFLEX OT4
oval corrugated cover
DIMERFLEX OT6
inner metal eyelet
DIMERFLEX OT7
double inner metal eyelet
DIMERFLEX OT8
inner metal eyelet
DIMERFLEX OT9
oval cover with centering ring (C/O)
Materials for coating
| material | AISI / ASTM | specification acc. to EN 10027-1 | specification acc. to EN 10027-2 | BS | specification acc. to ČSN/CZ | temperature (°C) | hardness (HB) | |
| min | max | |||||||
| low carbon steel | CS | St.3 / St.13 | 1.0333 | 2CR/CS 3CR/CS | 11 301 | -50 | +500 | max.90 |
| stainless steel | 304 | X5CrNi 18 10 | 1.4301 | 304S 15/16/31 | 17 240 | -250 | +550 | 130-180 |
| stainless steel | 316 | X5CrNiMo 17 12 2 | 1.4401 | 316 S31/33 | 17 346 | -200 | +550 | 130-190 |
| stainless steel | 316L | X2CrNiMo 18 14 3 | 1.4404 | 316 S11/13 | 17 349 | -200 | +550 | 120-170 |
| stainless steel | 321 | X6CrNiTi 18 10 | 1.4541 | 321 S12/49/87 | 17 247 | -270 | +550 | 130-190 |
| stainless steel | 316Ti | X6CrNiMoTi 17 12 2 | 1.4571 | 320 S31 | 17 348 | -270 | +550 | 130-190 |
| monel (NiCu30Fe) | Alloy 400 | NiCu30Fe | 2.4360 | 3072-76 NA13 | - | -130 | +600 | 110-150 |
| copper | copper | - | 2.0090 | - | copper | -250 | +400 | 50-80 |
| brass | brass Ms63 | - | 2.0321 | brass | brass | - | + | 60-90 |
| Titanium | B348 Gr.1 | Ti 99.8 | 3.7025 | - | - | -250 | +350 | 110-140 |
Materials for filler
| material | temperature (°C) | |
| min. | max. | |
| FG (expanded graphite) | -200 | +550 |
| CSF (Compressed Synthetic Fibre ) | -40 | +250 |
| CER (ceramic) | -200 | +1100 |
Basic profiles
