Omega G Series has double piston ring and hardened-steel gas and oil seals. Vents may be piped back to suction or purged for single envelope, gastight operation. Input shaft double lip seals with oil barrier prevent air ingress and gas emissions, while mounted and piped reservoir provides visual indication of seal condition. Rotary blowers are available in flows to 5,400 cfm at pressures up to 15 psi or vacuum up to 15 in. Hg.