Cartridge Style with Clamped Retainer (Type E)
Pump Models: CR, CRN32, CRN45, CRN64,CRN90
-22MM = PART NUMBERS:
A mechanical seal is a very effective device. Every centrifugal pump
must accommodate a spinning shaft while mechanically maintaining fluid
or gas contained in the "wet end" of the pump. Mechanical seals consists
primarily of a rotary seal face with a driving mechanism which rotates
at the same speed as the pump shaft, a stationary seal face which mates
with the rotary and is retained using a gland or in some pump models an
integral stuffing box cover, a tension assembly (utillizing springs or a
metal bellows) keeps the rotary face firmly positioned against the
stationary face preventing, excluding, and containing contamination and
leakage, both when the pump is not in operation and when the pump shaft
is rotating. Static sealing gaskets, orings or elastomeric bellows are
strategically located to complete the seal assembly.
quality sealing and cost-effective mechanical seal designs that help
keep equipment running longer while reducing downtime. Through our
comprehensive selection we provide mechancial seals with short lead
times and with a variety of designs for use in many common and more
challenging industry applications. When selecting a mechanical seal, it
is important to know what sort of design is needed, and we have outlined
a few of the more common elements below.
Seals simply refers to seals that are mounted to a shaft or sleeve but
are mounted independently as individual parts.
Single Spring Seals
Mechanical seal designs range from the work horse "single spring" mechanical seals,
to highly engineered double cartridge seals for extreme applications.
PTFE (polytetrafluoroethylene)or as most people know it Teflon ® , has a 0-14 ph range it usually will hold up.
Mechanical Seals can also be used in equipment with stuffing boxes
which will not accommodate inside seals, and they are easier to access
for adjustment and trouble-shooting.
Cartridge Seal is a pre-assembled package of seal components making
installation much easier with fewer points for potential installation
errors to occur.
Metal Bellows Seals
Seals for pumps - The most common are AM350 and Hastelloy C. Usually
with Stainless Steel end fittings permits these mechanical seals to be
used for services beyond the range of mechanical seals with synthetic
rubber sealing members.
There are two basic
double seal arrangements: Tandem Cartridge and face-to-face. A double
cartridge mechanical seal can be configured in either configuration.
Cartridge Seals - Tandem Cartridge Seal is a pre-assembled package of
seal components making installation much easier with fewer points for
potential installation errors to occur.
Seal pumbing plans you will know in some cases you will need a Seal Pot
to supply clean lubricating fluid to your seal.
Mixer and Agitator Seals
and Agitators Seals offer a unique problem for mechanical seals.
Because most mixers or agitators are mounted on top or on the side of a
vessel the long shaft being used to mix or agitate usually has an issue
with run out.
Mechanical Seals - Face Materials
come in a wide range of designs however the most important factor when
determining how long a seal is going to last, is deciding on the right
seal face materials. The old adage "pay me now or pay me later" applies
to seals. You must consider the environment the seal will be exposed to.
require seal faces that will hold up to
the wear and tear of abrasive environments. It makes little sense to
save money on the seal only to have to spend more money to replace the
seal later. On the other hand if you are pumping very clean fluid that
has a lubricating quality such as machine oil or Ethylene Glycol, save
for better quality bearings.
- Generally a 99.5% aluminum oxide offering excellent wear
characteristics due to it's hardness. It is chemically inert and can be
applied to nearly any product. Ceramic cannot however handle the thermal
shocks that Ni-resist or 17-4 seats can. They will also shatter like a
plate if dropped on concrete.
Silicon Carbide - Is a bluish-black
material created by fusing silica and corbon. It is in the same family
as Ceramic (due to the Silica), but has much better lubrication
qualities and is harder. The most common is reaction-bonded silicon
carbide. In Chemical applications however, Alpha Sintered Silicon
Carbide may be
recommended. Alpha Sintered Silicon carbide does
however sacrifice the Pressure Velocity ratios due to the lack of
un-reacted free carbon. Either grade of SIC can usually be re-lapped and
polished to be reused.
Tungsten Carbide - A very versatile seal
face like Silicon Carbide. It is very hard like silicon carbide however
it is very heavy to the touch, making it easy to distinguish from
silicon carbide. Ideal for high pressure applications due to a high
modulus of elasticity which helps prevent face distortion. Tungsten
carbide also can be re-lapped and polished to be re-used.
Is a form of Stainless steel which has had nickel added to it to lower
the friction generated by the rotating face. it is an inexpensive seal
face and ideal for fresh water applications.
GFPTFE - Say that one
ten times.... Glass Filled PTFE (most people just say Teflon (R)). Gives
the chemical resistance of PTFE however glass must be added to give the
face hardness and to prevent cold flow issues associated with PTFE.
What is more, we can supply many many types replacement seal of :
AX05/AX25/AX40K/BT-A2/BT-AR/BT-PN/CARTEX DUAL SEAL/CARTEX SINGLE
SEAL/CARTEX ANSI SINGLE
and so on.
Johncrane type 4610/4620/5610/5610Q/5610L/5620/type
1/type 2/type 21/type
502/515E/609/670/675/676/680/10T/10R/TYPE 20/20R/WB2/9T/8-1/8-1T and so
Mechanical seals used for stainless steel vertical multistage centrifugal pump
Cartridge Style with Clamped Retainer
This 22 mm Type E Cartridge Seal fits the following OEM Part Numbers.
Pump Models: CR, CRN32, CRN45, CRN64, CRN90
FT CRN SERIES for Grundfs pump Mechanical Seal used in centrifugal pumps,mixer,compressors and other rotating equipments.
All type of rotating equipment, pumps, mixers,
agitators and compressors.To suit
industries such as general chemical and oil refining, petrochemical, pharmaceutical, food
processing, pump,paper and waste water treatment and etc.
These components are developed through years of design improvements, accumulated expertise, and optimization of production techniques.
It is machined type. reaplce the original Grundfo pump seals.
Pressure: Up to 2.5Mpa
Speed: Up to 25m/s or 80ft/s
Temperature: -30deg C to 200deg C (Depending on materials)
Mediums: Water, oil and other low corrosion mediums
pump Part Number:
|Maximum ambient temperature||60 °C|
|Maximum operating pressure||16 bar|
|Max pressure at stated temp||16 bar / 120 °C|
|Max pressure at stated temp||16 bar / -40 °C|
|Type of connection||DIN|
Rotating seal ring material: Silicon carbide (SiC), tungsten carbide
- Stationary seat material: Silicon carbide (SiC).tungsten carbide.
This material pairing is used where higher corrosion resistance is required. The high hardness of
this material pairing offers good resistance against abrasive particles.
Secondary seal material: EPDM (ethylene-propylene rubber)
EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils