014

Excellent conductor of heat from the sealing surfaces; operates with minimum leakage; excellent radiation resistance

(a) Continuous lubrication introduced at the lantern ring. This table is only a guide. Consult the packing manufacturer with complete operating conditions for exact recommendations.

(b) Pressure relates to the operating pressure at the stuffing box.

(c) PV data based on a 2 in (5.08 cm) shaft at 1,750 and 3,600 rpm.

(d) Temperature is the product temperature.

(e) Functional temperature. Graphite can be used up to 3000°F (1650°C) in non-oxidizing atmospheres.

(f) Functional temperature. Flexible graphite can be used to 5300°F (2970°C) in non-oxidizing atmospheres.

(a) Continuous lubrication introduced at the lantern ring. This table is only a guide. Consult the packing manufacturer with complete operating conditions for exact recommendations.

(b) Pressure relates to the operating pressure at the stuffing box.

(c) PV data based on a 2 in (5.08 cm) shaft at 1,750 and 3,600 rpm.

(d) Temperature is the product temperature.

(e) Functional temperature. Graphite can be used up to 3000°F (1650°C) in non-oxidizing atmospheres.

(f) Functional temperature. Flexible graphite can be used to 5300°F (2970°C) in non-oxidizing atmospheres.

FIGURE 7 Metallic packing in spiral form (John Crane Inc.)
FIGURE 8 Metallic packing in ring form (John Crane Inc.)

is used in oil service and heat transfer fluids. Both copper and aluminum have a temperature range up to 1000°F (537°C) and pressures of 250 lb/in2 (17 bar). Babbit is not suitable for running against brass or bronze shaft sleeves, and where copper or aluminum is used, the sleeves should be 550 Brinell (55-60 Rockwell C) or harder.

Additional service limitations for common packing materials can be found in Table 6.

Survival Treasure

Survival Treasure

This is a collection of 3 guides all about survival. Within this collection you find the following titles: Outdoor Survival Skills, Survival Basics and The Wilderness Survival Guide.

Get My Free Ebook


Post a comment