Jonal Laboratories
High Temperature Silicone Rubber Seals & O-Rings for Aerospace
High Temperature Silicone Elastomers
Aerodynamic / Aerospace Seals
Fabric Reinforced Diaphragms / Non-Reinforced
Complex Elastomer-to-Metal Bonding
Custom Molded O-rings / O-ring Seals
EMI RFI Shielding
Conductive Seals

EMI RFI Shielding

EMI (Electro-Magnetic Interference) and RFI (Radio-Frequency Interference) Shielding:

These types of seals are a specialized category of conductive seals. EMI RFI shielding technology is a key element in creating low-observable / stealth systems.

EMI and RFI shielding products manufactured by Jonal are made from specialty elastomers containing precious metal fillers, imparting high electrical conductivity / low resistance, while also having the flexibility properties of rubber. Seals of this type are used to protect sensitve electronic equipment in three ways:  1) To attenuate impinging external radiation (RADAR, EMP etc. from entering the enclosure, 2) To prevent internal radio frequency signals escaping from the enclosure, and 3) to provide environmental sealing against dust, moisture, etc.