Products: Knitted Mesh with Carrier - KM Series
General Information
KM Series gasket strip and frame materials consist of a slotted aluminium extrusion carrier into which a solid or elastomer cored knitted mesh gasket is clamped. These ready-to-fit, semi-rigid gasketing profiles help to avoid the problems often encountered when fitting adhesive-backed or plain mesh gaskets.
They can be supplied with dual gaskets, one on either side of the carrier, with one being a mesh gasket and the other an environmental seal. The aluminium extrusion acts as a limit stop, controlling the even compression of the gasket.
Applications
KM Series gaskets can be used on covers, door frames and other apertures where the surrounding metalwork is either insufficiently rigid or is very heavy duty and needs a robust, well anchored gasket which will not be affected by the stesses and shearing action imposed on conventional twinstrip gasketing.
KM mesh is generally supplied as straight lengths (up to 4m), as welded/jointed frames to suit specific apertures or as mitre cut sections ready to mount around cabinets, doors or hatches. The aluminum carrier is usually drilled and countersunk ready for screws or rivets or, in less stringent conditions, frames can be fixed using a high-bond pressure sensitive adhesive. Welding is possible but not recommended as damage to the mesh or elastomer is very difficult to repair.
Specifications
| Monel | - BS3075 – NA13 | (0.11mm diameter) |
| Aluminium 5056 | - AMS 4182 | (0.13mm diameter) |
| TCS | - ASTM B520 | (0.11mm diameter) |
| Stainless Steel | - Alloy 304 | (0.13mm diameter) |
| Silicone Sponge | - AMS 3195 | |
| Silicone Solid | - ZZ-R-765 |
|
| Neoprene Sponge | - Mil-R-6130 | |
| Neoprene Solid | - Mil-R-6855 | |
| Aluminium carrier | BS1474 6063 with Alocrom 1000, 1200 or a RoHS compliant chromate conversion surface treatment |
|
Performance
| FREQUENCY | FIELD | MONEL | ALUMINIUM | TCS | S/STEEL |
|---|---|---|---|---|---|
| 10KHz | H | 45 | 40 | 60 | 40 |
| 100KHz | H | 49 | 45 | 65 | 44 |
| 1MHz | H | 60 | 60 | 85 | 58 |
| 1MHz | E | 125 | 125 | 125 | 125 |
| 10MHz | E | 120 | 120 | 120 | 120 |
| 100MHz | E | 100 | 100 | 108 | 100 |
| 400MHz | P | 98 | 95 | 99 | 94 |
| 1GHz | P | 85 | 76 | 78 | 76 |
| 10GHz | P | 80 | 65 | 62 | 60 |
Technical Drawings (click on drawings to zoom)
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KM Single Slot Style
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KM Twin Slot Style 1
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KM Twin Slot Style 2
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KM With Environmental Seal
Tolerances
- Wire meshes - generally ± 0.8mm on diameter, width and height
- Linear measurements on gaskets - up to 300mm ± 0.8mm, up to 1000mm ± 1.5mm
- Sponge and solid elastomers - up to 4.5mm ± 0.4mm, over 4.5mm ± 0.8mm
How to order
Standard sizes can be specified from the table below.
Alternatively specify: Series-Carrier-Mesh portion-Elastomer portion (where applicable)-Elastomer Size
| Series | Carrier | Mesh Portion | Elastomer | Size/dimensions of rubber |
|---|---|---|---|---|
| KM | CS1 | As KP/KE series | SS=Silicone Sponge | xxxx-xxxx |
| CS2 | NS=Neoprene Sponge | |||
| CS3 | NT=Neoprene Tube* | |||
| CS4 | ST=Silicone Tube* | |||
| CS6 | *=with 'leg' for twin slot carriers. |
Examples / Notes
- Notes:
- If second gasket/seal on CS6 is not specified, it defaults to being the same as the first material.
- If a suffix in brackets is shown after the mesh part number this indicates the number of mesh layers. The default is two (2) layers and does not need to be specified.
- Examples:
- KM-CS6-M-10-0064-ST-0064-0048 indicates a base material comprising carrier section CS6 with 6.4 mm diameter Monel mesh fixed to one side and a silicone rubber tube 6.4 mm o.d. and 4.8mm i.d. on the opposing side.
- KM-CS1-ASS-60-0048 indicates a base carrier section CS1 with an aluminium mesh covered Silicone sponge gasket 4.8 mm diameter on one side only.
For gaskets or strip material not shown, or specific shapes, made up frames and fixing hole positions, please send a drawing and we will allocate a part number with our quotation.
KM Series Carrier Sizes
| Shape | Thickness mm | Width mm | Slots |
|---|---|---|---|
| CS1 | 3.2 | 9.5 | 1 |
| CS2 | 3.2 | 12.7 | 1 |
| CS3 | 3.2 | 15.9 | 1 |
| CS4 | 3.2 | 19.1 | 1 |
| CS6 | 3.2 | 12.7 | 2 |
Please note:
- Avoid mounting any 'dual' or 'twin' gasket material where two materials are bonded together in a position where the normal process of closing a door or cover exerts a stress or shearing action which creates pressure on the joint between the two materials. If possible, the pressure exerted on any gasket should be directly downwards onto the exposed face of the gasket.
- KM Series gasket forms can be supplied as strip material, pre-formed gasket sections or as ready-to-mount finished gaskets.
- Other sizes and profiles are available – please ask!
For any technical queries please contact our sales office.
