With ranges from 7 inwc to 2500 psid, SOR Inc.'s high static operation, O-ring type differential pressure switches have weather proof housing and meet CSA, CE, and GOST certifications.

Static O-ring pressure switches manufactured by Northeast Machinery Network Inc. feature adjustable range of 12-100 psi or 25-275 psi, over range of 1500 psi, and proof of 2500 psi.

Reotemp Inc. manufactures general purpose and explosion proof static O-ring pressure switches that feature an adjustable range up to 550 psi and a rugged design. The company's general purpose switches are NEMA 4 (4X) rated.