WEBVTT 00:00:02.200 --> 00:00:02.500 line:0 As seen here, a reciprocating compressor contains many moving parts. 00:00:02.500 --> 00:00:10.000 line:0 As seen here, a reciprocating compressor contains many moving parts. 00:00:10.500 --> 00:00:20.000 line:0 Lube oil is used to maintain the airtightness of moving parts as well as to prevent wear and jamming between each part.