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MATERIALS

SPECIAL PACKINGS PTFE

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SPECIAL PACKINGS GRAPHITE

SPECIAL PACKINGS KEVLAR

SPECIAL PACKINGS SYNTHETIC YARNS

Standard packs
Cross Section(mm) Weight (Kg)
3 x 3 1
4 x 4 1
5 x 5 1
6 x 6 2,5
6,5 x 6,5 2,5
8 x 8 2,5
9,5 x 9,5 2,5
10 x 10 2,5
12 x 12 2,5
12,7 x 12,7 2,5
14 x 14 5
16 x 16 5
18 x 18 5
19 x 19 5
20 x 20 5
22 x 22 5
notes: 10 kg boxes are also available measuring 28 x 28 x 28 (h) cm for braid Packing with cross-sections from 6 x 6 mm to 40x40 mm.

Introduction

Braid/stuffing box Packing products are used by industry to insulate shafts, rods and seats to prevent escapes of Gas or fluids. The main fields of application are:

  • static seals (covers, frames, furnace doors, boilers);
  • stem seals (valves);
  • moving shaft seals (plunger pumps);
  • rotating shafts (centrifugal pum-ps, mixers, stirrers).

Characteristics

Depending on the end use, when selecting the type of braid/stuffing box Packing required, certain welldefined and basic characteristics used to distinguish the various types of Packing need to be borne in mind. In particular, we recommend assessing: Depending on the end use, when selecting the type of braid/stuffing box Packing required, certain welldefined and basic characteristics used to distinguish the various types of Packing need to be borne in mind. In particular, we recommend assessing:
  • Flexibility, to avoid stretching and twisting due to deformation in the Packing structure when laid in rings;
  • Elasticity and elastic return, to guarantee tightness under pressure;
  • homogeneity, acting as a guarantee of efficient service and longer life;
  • Compact external surfaces, guaranteeing tightness while avoiding excessive tightening pressure and possible wear to the shaft;
  • Impregnation to the heart (also known as yarn-by-yarn impregnation), offering guaranteed tightness to improve efficiency and the value of the application.

Components

Braid/stuffing box Packing products have different components to suit their different applications. The main components are:
  • graphite fibres (providing extra chemical and thermal resistance);
  • insulating glass and ceramic fibres (generally used for static thermoresistant seals);
  • vegetal fibres, such as cotton,linen, ramie fibre and hemp (especially suited to applications with cold water and where hard-wearing qualities are required);
  • synthetic fibres, such as ptfe, polyester, aramidic and acrylic fibres (suitable for producing Packing with high resistance to chemicals and corrosive agents);
  • metals, such as stainless steel, copper and inconel (used to strengthen the Packing and thus increase its mechanical strength at high temperatures and pressures);
  • lubricants and binders, essential when using Packing as these must not attack the contact fluids or corrode the metals insurrounding the Packing or any metal in this, while at the same time eliminating friction. This category includes mineral, vegetal and synthetic oils and greases (for universal use), dry or dispersed graphites (for external treatment with excellent self-lubrication and antifriction properties), dispersed (for lubrication and anti-friction treatment on Packing coming into contact with chemicals and corrosive agents) and Molibdenum disulphide MoS2 (used in external treatments with particular self-lubricant and anti-corrosive properties).

Service

A unique consultancy service tailored to each customer's needs is always available from our technical department.

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