Disposable seal system

For use in a chemical delivery system having a delivery tube for delivering chemicals to a rotating tubular member, a sealing arrangement for sealing the tubular member to prevent chemical leakage, the delivery tube having a first end that intrudes into the tubular member, said sealing arrangement comprising:

• a secondary nut member having an extended portion, said secondary nut member being adapted for mounting on the first end of the delivery tube in fixed position;
• a sealing member having a diameter such that it is adapted to make sealing engagement with the inner wall of the rotating tubular member;
• a primary nut for maintaining said sealing member in fixed position;
• said extended portion having external threads thereon and said primary nut having a bore extending therethrough having internal threads along at least one portion thereof for mating with the threads on said extended portion, said primary nut having a direction of rotation for tightening it on said extended portion wherein the direction of rotation is the same as the direction of rotation of the rotating tubular member;
• said sealing member having a hub portion adapted to be captured between said primary nut and said secondary nut;
• and
• said primary nut having a shoulder adapted to bear against said hub portion, said shoulder having a circular ridge thereon for applying a distorting force to said sealing member.

For use in a chemical delivery system having a delivery tube for delivering chemicals to a rotating tubular member, a sealing arrangement for sealing the tubular member to prevent chemical leakage, the delivery tube having a first end that intrudes into the tubular member, said sealing arrangement comprising:

• a secondary nut member having an extended portion, said secondary nut member being adapted for mounting on the delivery tube in fixed position to the first end of said delivery tube by rotation with respect thereto, said secondary nut having a bore extending therethrough having internal threads over at least a portion of the length of said bore to form mating threads with external threads on the delivery tube, the direction of rotation of said secondary nut member being the same as the direction of rotation of the rotating tubular member;
• a sealing member having a diameter such that it is adapted to make sealing engagement with the inner wall of the rotating tubular member;
• and
• a primary nut for mounting on said extended portion of said secondary nut member for maintaining said sealing member in fixed position, said primary nut having a direction of rotation for tightening it on said extended portion wherein the direction of rotation is the same as the direction of rotation of the tubular rotating member.

A material delivery system for delivering material to a rotating tubular member, said delivery system comprising:

• a stationary delivery tube substantially axially aligned with the rotating tubular member, said delivery tube having a first end for connection to a stationary source of the material and a second end which intrudes into the rotating tubular member;
• a sealing member having a diameter such that it is adapted to make sealing engagement with the inner wall of the rotating tubular member;
• a first holding member for said sealing member affixed to the second end of said delivery tube for affixing said sealing member thereto, said holding member having an extended portion;
• and
• a second holding member mounted on said extended portion for maintaining said sealing member in fixed position on said stationary delivery tube.