MERKEL Standard Packings Range - MarkBi Standard Programme (1).pdf · stuffing box Shaft surface. ... boiler alkalies, brine, and ammonia. Exceptions: heavily oxidising ... Merkel

15-04-02/1

Merkel Freudenberg Fluidtechnic

Standard Packings Range

MERKELMERKEL

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� S - Speed + Size

� T - Temperature

� A - Application

� M - Media (pH)

� P - Pressure

To ensure correct recommendation, remember STAMP!

Application Parameter

Gland

Packings

Media

Shaft

Bottom of stuffing box

Shaft surface

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Packings for Different Applications

� Rotary pumps

� Agitator & Mixer

� Plunger pumps

� Valves

� Container & housing seals

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� Media: all fluids

� p: 25 bar (normal 1 - 10)

� t: 120 °C (occasionally 280 °C)

� v: 25 m/s

� pH: 0 … 14 (normal 0 … 11)

Rotary Pump Parameters

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� Media: all fluids

� p: 10 bar

� t: 100 °C

� v: 3 m/s

� pH: 0 … 14

Mixer and Agitator Parameters

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� RAMILON 4586

� AROLAN II 6215

� UNICHEM 6313

� AROCHEM S 6216

� UNIVAL 6323

� UNIFLEX 6588

� KOMBILON 6742

� UNIVERDIT 7000

Packings for Rotary Pumps, Agitators & Mixers

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Ramie yarn packing with long-term PTFE impregnation

and running-in lubricant

Rotary and plunger applications

� ideal for all water pump application

� waste water, sewage, water treatment plants

� Refiners, mills, plunger pumps, stern tubes

� Pumping of aqueous mixtures, brines

� Media: All kind of water, drinking water, solutions containing solid particles, oils, greases, solvents, foodstuffs

RAMILON 4586

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RAMILON 4586

Features Benefits

Very strong fibre, higher breaking strength than cotton or flax

Wear resistant, longer service life

Will not rot in water Longer service life

Volumetrically stable, unlike grease special impregnation won’t wash out

Low volume loss, less maintenance

Soft, resilient yarn Will not score shaft

Thorough impregnation with PTFE during braiding

Better density and chemical resistance

Suitable for food and pharmaceutical industry

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Packing made of aramid staple yarn with PTFE impregnation and running-in lubricant

Rotary applications� Power stations, refineries, sewage treatment, chemical plants. Pulp &

Paper� For pumping abrasive media� For pumping salt solutions, hot water, organic solvents, hydrocarbons, oils,

greases, diluted acids and alkalis

AROLAN II 6215AROLAN II 6215

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Features Benefits

Made from highly waer resitant aramid yarn

Long life, even with highly abrasive media

100% spun staple yarn with high elasticity and resilence

Less abrasive to shaft than multifilament yarns

The packing retains its shapewhen cut and won't fray

Easier handling

Thorough impregnation of packing

Less leakage, longer service life

AROLAN II 6215

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Pure PTFE packing made from pure PTFE yarn with running-in lubricant

Rotary applications� Chemical plants, Pharmaceutical and Food processing industry� All chemicals including concentrated hot acids and alkalis.

Exceptions: molten alkali metals, fluorine an some fluorine compounds. � Available in flat tape for sealing flanges and covers

UNICHEM 6313

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UNICHEM 6313

Features Benefits

Very pliable Provides very high sealing effect

Very dense, when compressed Longer service life

Silicon running-in lubricantPrevents over-heating during critical running-in period

Pure PTFE contstructionpH-range: 0-14, suitable for all chemical medias

Suitable for food and pharma industry

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Aramid multifilament yarn and PTFE-graphitecompound yarn with PTFE impregnation and running-in lubricant

Rotary and plunger pumps, mixers� Chemical industry, power plants, mines� For pumping hot water, salt solutions, alkalis, organic solvents,

hydrocarbons, medium concentration acids

AROCHEM S 6216

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AROCHEM S 6216

Features Benefits

Thermally stable PTFE-graphitecompound running sole

Smooth running, low friction

Wear-resistant multifilament aramid yarn in edges

Anti-extrusion protection extra stability

Stable and dense packing Suitable for plunger pump applications

Mineral oil running-in lubricant Prevents over heating during critical run-in period

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UNIVAL 6323

PTFE-graphite compound yarn with silicone oil running-in lubricant

Rotary applications

� For pumping almost all acids. Exceptions: highly concentrated nitric acid, oleum

� Food approval by MPA, Stuttgart

� Used as standard packing in the chemical industry for nearly every medium

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UNIVAL 6323

Features Benefits

Made of low thermal expansion fibreVolumetric stability, less gland adjust-ment required, low maintanance

Very dense, when compressed Longer service life

Fibres provide excellent heat conduction

Longer service life even at higher speed applications

Fibre is resitant to broad range of chemicals

Suitable for a wide range of applications

Very flexible packing and a high cross density

Low leakage with a minimum of gland pressure


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UNIFLEX 6588

Synthetic yarn with high carbon content, special PTFE/graphite impregnation and running-in lubricant

Rotary applications

� Chemical processing, paint industry, power plants, refineries, pulp & paper industry

� To pump cold and hot water, steam, aqueous solutions, diluted acids and alkalis

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UNIFLEX 6588

Features Benefits

Non-shrinking synthetic fibre with high cabon content

Very good heat dissipation, ideal for hot water pumps

Very resistant against abrasive media Long lasting

Flexible, stable braiding structureVery elastic and low risk of gap extrusion

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KOMBILON 6742

Combined braid of PTFE and carbon yarns with PTFE impregnation and running-in lubricant

Rotary applications and agitators

� Slow moving pumps, mixers and agitators with some shaft deflection

� For pumping alkalis, solvents, alcohols, ketones, esters, oils, acids, hot water, boiler alkalies, brine, and ammonia. Exceptions: heavily oxidising acids

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KOMBILON 6742

Features Benefits

Carbon and PTFE yarn construction with intensive PTFE impregnation

High elasticity, high memory,very flexible

Very flexible packing and a high cross density

Low leakage even againstshaft deflection

Good heat disipation andlow cold flow

Longer service life even at higher speed applications

Fibres are resitant to broad range of chemicals

Suitable for avery wide range of applications


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Compact extruded packing of PTFE-graphite compound

Plunger, rotary, and valve applications

� All slow pumps and agitators, particularly with abrasive media

� Expansion joints

� Used in combination with braided end rings

� Acids, alkalises, solvents, vapours, gases, solidifying plastics, adhesives, lacquers, crystalline abrasive media such as salts, slurries, ceramic pastes. Exceptions: oleum, high concentrations of nitric acid

UNIVERDIT 7000

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Features Benefits

Extruded PTFE/Graphite compound

Gentle to shaft, even with abrasive media, self lubricating

High cross sectional densityHigh gas sealability with low gland pressure

Very pliableEasily conforms to required shape (anti-extrusion rings are highly recommended)

UNIVERDIT 7000

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� Media: Water, ammonia, uric acid

� p: 300 - 1000 bar (1400 bar)

� t: 80 °C

� v: 2 m/s

� pH: 0 … 14 (normal 5 … 11)

Plunger Pump Parameters

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Packings for Plunger Pumps

� RAMILON 4586

� UNISTAT 6303

� ALCHEM 6375

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� Media: Water, hot water, steam, high pressure steam, gases

� p: 400 bar (1000 bar)

� t: 600 °C

� v: 0 - 2 m/s

� pH: 0 … 14 (normal 5 … 11)

Valve Parameters

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� Media: all fluids and gases

� p: up to 15 bar

� t: up to 800 °C

� v: 0 m/s

� pH: 0 … 14

Container and Housing Seal Parameters

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� AROSTAT 6204

� UNISTAT 6303

� ALCHEM 6375

� CARBOSTEAM 6550

� G-SPEZIAL 6560 / G-SPEZIAL S 6565

� GRAFIFLEX 6501

Packings for Valves and Housing Seals

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Wear resistant aramid yarn with PTFE-impregnation

Valves

� Valve and static applications in all industries

� Cold and hot water, steam up to 180 °C, salt solutions, organic solvents, hydrocarbons, oils, greases, diluted acids and alkalises

AROSTAT 6204

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AROSTAT 6204

Features Benefits

Highly wear resistant aramid yarn Can withstand very abrasive media

High level of PTFE imprgnation dense cross section, low leakage

Wide pH-range: 1-13 Suitable most chemical media

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PTFE-graphite compound yarn with no additional lubricants

Valves and plunger pumps

� Nuclear technology, chemical and food industry

� High pressure plunger pumps

� Food approval by MPA, Stuttgart

� For sealing steam, condensate, alkalises, solvents, almost all acids with exception of highly concentrated nitric acid and oleum

UNISTAT 6303

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UNISTAT 6303

Features Benefits

Pure PTFE yarn filed with graphiteLow friction, excellent heat conduction and prevents over heating

Dense and pressure resistant structure

High sealability, widely usedin plunger pump application

Excellent chemical resistanceUniversal use with all medias,also for application with oxygen

Suitable for food and pharmaceutical industry,

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Pure PTFE multifilament yarnwith PTFE-impregnation

Valves and plunger pumps

� For all applications in chemical and process industry

� For use in nuclear power plants

� For sealing all chemicals including concentrated hot acids and alkalises Exceptions: molten alkali metals, fluorine and some fluorine compounds

ALCHEM 6375

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Features Benefits

Particulary tight and dense structure Very low leakage rate

High degree of form stability andow compressibility

Very low setting rates,also suitable for plunger pumps

Pure flexible PTFE yarns,white colour

Excellent chemical resistance,no risk of colour contamination

Low proportion of soluble chloride content

Also suitable for nuclear apllications


ALCHEM 6375

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Carbon yarn packing with high temperature impregnation

Valves

� High temperature steam applications in power plants

� Anti-extrusion protection and wiper for expanded graphite

� Meets API 589 std. used as anti-extrusion rings with GRAFIFLEX

� Sealing hot water, hot air, steam, acids and alkalises Exceptions: heavily oxidising acids such as hot sulphuric and nitric acid

CARBOSTEAM 6550

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CARBOSTEAM 6550

Features Benefits

Soft and flexible carbon fibres with heat resistant graphite impregnation

Gentle to valve shaft, low friction, long service life

High cross-sectional stabilitySuitable as anti-extrusion rings combined with graphite rings orG-Special

Universal high temperature - steam packing

Standard seal in power plants and utilities

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G-SPEZIAL 6560

Expanded graphite yarn with Inconel wire reinforcement.

Available without Inconel wire -> G-SPEZIAL S 6565

Valves

� Service packing for power plants

� High temperature applications in process industry

� For sealing hot water, steam, gases, oils, acids and alkalis Exceptions: strongly oxidising acids like sulphuric and nitric acid

� G-Special I 6569 available with corrosion inhibitor

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G-SPEZIAL 6560

Features Benefits

Pure expanded graphite, reinforced with Inconel wire

Universally chemical and temperature resistant, doesn’t stick to shaft

Volumetrically stable, without running-in lubricant

Standard seal in power plants and utilities

High flexibility and easily adaptable

Also suitable in old plants

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GRAFIFLEX 6501

Pure, expanded graphite

Valves and cover lids

� Power plants and nuclear power plants, chemical and process industry

� Food approval, MPA; oxygen approval, BAM; drinking water approval, DVGW; meets API 589 std. used with CARBOSTEAM

� For sealing hot and feed water, steam, heat transfer oils, hydrocarbons and many other media. Exception: heavily oxidising media

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GRAFIFLEX 6501

Features Benefits

Pure, expanded graphiteHigh temperature and chemical resistance

Dense and resilient packingExcellent sealing effect and constant elasticity

Wide variety of moulds for different sealing geometries

Thousands of valve sizes as well as cover seal applications

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GRAFIFLEX - Types

6501

6581

6521

6524

6525

6522

6523

6520

� 6501, 6581 are suitable for gabs < 0.3mm

� Other types with reinforced corners are suitable

for gabs > 0.3mm

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GRAFIFLEX Cover Lid Seal with Springs

Documents

MERKEL Standard Packings Range - MarkBi Standard Programme (1).pdf · stuffing box Shaft surface. ... boiler alkalies, brine, and ammonia. Exceptions: heavily oxidising ... Merkel