RF/EMI Shield Spiral Gasket
Handa Spiral Wound RF/EMI Shielding Gasket stands as an exemplary shielding material, tailored for sensitive equipment that necessitates unparalleled electromagnetic shielding performance.
The Gasket is crafted from high-elastic Sn/Ni plated metals and offers flexibility, resilience, and exceptional shielding efficiency. Its Seamless integration ensures a robust barrier against EMI & RFI for diverse equipment, such as semiconductor manufacturing equipment (plasma etching equipment), precision medical equipment, telecommunications equipment, etc.
All RF/EMI Shield Spiral Gasket
Groove Mounted Series
Compression Force
Shield Spiral Gaskets are obtainable in three distinct resiliencies (as illustrated below). The optimum compression of the gasket amounts to 25% of the diameter of the spiral.
Since the force necessary to compress the gasket is a function of the cube of the thickness of the stainless steel ribbon, the compression forces presented are approximate.
Standard Force (“S” Series)
| “S” Series | SBS | SBN | SSN | |
|---|---|---|---|---|
| Ribbon Strip | Sn-plated BeCu | Ni-plated BeCu | Stainless Steel | |
| Strip | Material | Beryllium Copper C17200 | 304H | |
| Electrical Conductivity | 17~28 %IACS | – | ||
| Compression Force
(OD 3.2mm, 25% Comp, Kgf/in.) |
4.8 ±15% | 4.8 ±15% | 6.5 ±15% | |
| String Outer Diameter (OD) | 1.0 ~ 12.0 mm | |||
Others (“M”, “L” Series)
* Strip materials are the same as standard force’s.
| Series | Medium Force(“M”Series) | Low Force(“L”Series) | ||||
|---|---|---|---|---|---|---|
| MBS | MBN | MSN | LBS | LBN | LSN | |
| Strip Material | Sn-plated BeCu | Ni-plated BeCu | Stainless Steel | Sn-plated BeCu | Ni-plated BeCu | Stainless Steel |
| Compression Force
(OD 3.2mm,25%Comp,Kgf/in.) |
2.0±15% | 2.0±15% | 2.7±15% | 0.4±15% | 0.4±15% | 0.6±15% |
| String Outer Diameter(OD) | 1.0~10.0 mm | 2.3~10.0 mm | ||||
Product Support
How to choose a proper P/N
* Options avaiable by ribbon strip material, force, inner cord material, O-Ring, etc.
Splicing Options: Spiral has created three standard options to treat the splicing of material in our spool selection.
* If over-compression of the gasket is not a concern or problem，to keep costs low, we recommend you omit the cord usually used in the spiral.
| Options | Codes |
|---|---|
| Product Series | S: Shield Spiral Gasket |
| Force | S: Standard Force, M: Medium Force, L: Low Force |
| Strip Material | BS: Sn plated BeCu,BN: Ni plated BeCu, SN: Stainless Steel,SNS: Sn plated Stainless Steel,SNN: Ni plated Stainless Steel |
| String OD (Ø) | 008~120 (0.8~12.0mm) |
| Inner Cord (Core) | W: Cordless,A: Silicone rubber solid,T: Silicone rubber tube,F: Silicone foam If it is hollow, mark ‘H’,For example ‘AH’ represents the material of hollow core Silicone rubber solid |
| O-Ring ID* | R: O-Ring Inner Diameter(mm), * String type unless otherwise indicated |
| Elastomer wall thickness* | t: Elastomer wall thickness(mm) |
Recommended Groove Size
The following is a drawing for size reference.
| String OD [mm] | Groove Size [mm] | ||
|---|---|---|---|
| Depth(L)
+0.05 /-0 (mm) |
Width(G)
+0.18 / -0.13 (mm) |
Width(W)
+0 / -0.05 (mm) |
|
| 0.86 ± 0.05 | 0.58 | 1.17 | 0.84 |
| 1.19 ± 0.05 | 0.89 | 1.60 | 1.14 |
| 1.60 ± 0.08 | 1.17 | 2.39 | 1.52 |
| 1.78 ± 0.08 | 1.35 | 2.39 | 1.70 |
| 1.98 ± 0.08 | 1.50 | 2.77 | 1.91 |
| 2.39 ± 0.10 | 1.78 | 3.18 | 2.29 |
| 2.62 ± 0.10 | 1.96 | 3.58 | 2.51 |
| 2.77 ± 0.10 | 2.08 | 3.96 | 2.67 |
| 3.18 ± 0.10 | 2.39 | 4.34 | 3.07 |
| String OD [mm] | Groove Size [mm] | ||
|---|---|---|---|
| Depth(L)
+0.05 /-0 (mm) |
Width(G)
+0.18 / -0.13 (mm) |
Width(W)
+0 / -0.05 (mm) |
|
| 3.53 ± 0.13 | 2.64 | 4.75 | 3.40 |
| 3.58 ± 0.13 | 2.67 | 4.75 | 3.45 |
| 4.37 ± 0.13 | 3.25 | 5.94 | 4.19 |
| 4.75 ± 0.15 | 3.56 | 6.35 | 4.60 |
| 6.35 ± 0.18 | 4.70 | 8.71 | 6.10 |
| 7.92 ± 0.23 | 5.94 | 10.72 | 7.62 |
| 9.53 ± 0.28 | 7.11 | 12.70 | 9.25 |
| 12.70 ± 0.38 | 9.53 | 16.66 | 12.32 |
| custom | |||
Custom Manufacturing
Custom RF/EMI Shield Spiral Gasket
We can manufacture Shield Spiral Gasket in any size diameter, from 0.8mm up to approximately 50.0mm. The functional length of the part may be short at very large diameters. Please contact us with your requirements.
If you have specific Shield Spiral Gasket product customization needs,
it is best to contact the Handa Shielding supplier or manufacturer directly, who can provide detailed information about customization services, product options and pricing. This will ensure you get the best solution for your needs.
Ordering Information
Shield Spiral Gasket is sold by the foot and typically packaged on spools except in small quantities. It can also be ordered cut-to-length in specific sizes at a low cost, or you can cut it yourself using a sharp pair of scissors. Not all configurations are stock items. Contact us for availability. Custom o-rings are also available.
RF/EMI Shield Spiral Gasket Manufacturing
Shielding spiral tube is a product used for electromagnetic interference (EMI) shielding, usually made of conductive materials. Its manufacturing process may involve the following steps: material selection, material processing, rolling, joining, surface treatment, size customization, quality control, packaging. Shielded spiral tubes are commonly used in electronic equipment, communications equipment, and other applications that require EMI shielding.
