Metal Jacketed Gaskets
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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

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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

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