Stuffing box backstop ring

Details Stuffing box backstop ring Stuffing box backstop ring

1977-08-12

1978-07-11

Ward, Jr,, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277133, 277 94, F16J 1534

Patent

active

040997294

ABSTRACT:
The invention relates to a backstop ring for a stuffing box or the like which is cooperable with a carbon sealing ring. The main parts of a stuffing box are normally the stationary backstop ring and the carbon slide ring which rotates with the shaft. These two rings have mutually engaging sealing surfaces. The sealing surface of the stationary backstop ring is ground in a manner to form scratches which are orientated to create a radially outward pumping effect. The flatness of the ground surface has an overall variation of less than six microns and preferably is between 2 and 5 microns. The scratches have a roughness between 0.2 and 2 microns. For scratches on the order of 1 to 2 microns the surface is phosphatized.

REFERENCES:
patent: 3109658 (1963-11-01), Barrett et al.
patent: 3572730 (1971-03-01), Otto et al.
patent: 3586340 (1971-06-01), Otto et al.
patent: 3601413 (1971-08-01), Darnell
patent: 3744805 (1973-07-01), Heinrich
patent: 3749412 (1973-07-01), Lingley
patent: 3810637 (1974-05-01), Bonvin
patent: 3894741 (1975-07-01), McHugh

Affiliated with

Also associated with

Rating

Stuffing box backstop ring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stuffing box backstop ring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stuffing box backstop ring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-257811