GLAND PACKING BRAND AP-31

GLAND PACKING BRAND AP-31

Gland packings. Gland packings are used to fill stuffing boxes to seal moving and stationary joints of various machines and apparatuses. Supplied in coils of ≈15–20 kg.

No.Product NameSizesUnitPrice (incl. VAT)Production
1Gland packing brand AP-314x4 - 5x5kg111 400Russia, PJSC "UralATI"
2Gland packing brand AP-316x6 - 15x15kg108 900Russia, PJSC "UralATI"
3Gland packing brand AP-3116x16 - 28x28kg108 900Russia, PJSC "UralATI"
4Gland packing brand AP-3130x30 - 50x50kg108 900Russia, PJSC "UralATI"

Detailed Technical Description

Structure: Gland packings of brand AP-31 are elastic asbestos braided cords with a round or square cross-section profile and braided cores (the braiding of the latter can be single-layer or multi-layer).

Manufacturing & Packaging: Produced in bobbins/coils weighing from 15 to 20 kg. These rubber-technical products are manufactured according to GOST 5152-84. According to this standard, they are made of chrysotile asbestos threads impregnated with a special antifriction composition consisting of petroleum extract with a graphite filler.

Application: Packing AP-31 seals stationary and moving joints, as well as shut-off and control valves of pipelines designed for transporting neutral or aggressive gaseous/liquid media and petroleum products. It is widely used in pumps, valves, and other units/mechanisms, neutralizing the negative effects of sliding friction.

Benefit: The use of AP-31 packing significantly increases the service life (shelf life) of the equipment. 

Technical Specifications

GOST 5152-84 regulates a number of main technical characteristics for the graphite gland packings AP-31 manufactured by producers:

Application Parameters

Working MediumMax Permissible pHMax Permissible Pressure, MPaMax Permissible Temp., °CMax Sliding Speed, m/sSealing Unit
Neutral and aggressive liquid and gaseous media, steam 3 - 14 4.5 -70 to +300 Valves (Armature) 
Petroleum products -2.0 -30 to +300 -Valves (Armature) 
Neutral and aggressive liquid media, petroleum products -2.0 250 15 Centrifugal pumps 
Neutral and aggressive liquid media, petroleum products ---Piston pumps 

Formula: The weight of 1 linear meter of packing (grams) with a cross-section of D х D is calculated by the formula: P*D*D, where P is the density of the packing.

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