JW Winco

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GN 552 Breather Caps Plastic


GN 552 Breather Caps, Plastic Type: A - Without dipstick
ELESA original design
code: SFN. / SFP. / SFP+a
Type: A - Without dipstick
GN 552 Breather Caps, Plastic Type: A - Without dipstick GN 552 Breather Caps, Plastic Type: B - With dipstick

Product description


Function and operational criteria of breather caps GN 552 see description of function.

MAX-MIN markings can easily be added to the flats of a dipstick (see GN 109).

Type with dipstick (Type B) is only available for marks 0, 1 and 2 as follows:
Size 31 - all threads
Size 42 - G 3/4 and 1 only
Size 57 - G 1 1/4 and G 1 1/2 only



  • Temperature resistant up to 100 °C
  • Upper part (cap)
    Orange, RAL 2004
  • Lower part (threaded part)

Rubber NBR (Perbunan®)

Air filter wire mesh

  • Zinc plated
  • Filtration 50 to 60 µm

Air filter PU-foam (Polyurethane)

  • Filtration 40 µm
  • Temperature resistant up to 100 °C

Steel, phosphated


On request

Fluid level markings / special lengths
see GN 109

Technical drawing

Hide technical drawing
GN 552 Breather Caps, Plastic sketch

Article options / Table


AWithout dipstick
B*With dipstick


0With splash guards, with wire mesh filter
1With splash guards, without filter
2With splash guards, with PU filter
3Without splash guards, without filter
4Without splash guards, with PU filter
Show / Hide columns
31G 1/4--8309,529,5188
31G 3/8M 16 x 1,5M 18 x 1,510309,529,5188
31G 1/2M 20 x 1,5M 22 x 1,512309,529,5188
42G 3/8--104111,536,5-
42G 1/2--124111,536,5-
42G 3/4--184111,536,5184
42G 1--184111,536,5184
57G 3/4--18561442-
57G 1--23561442-
57G 1 1/4--28561642184
57G 1 1/2--28561642184

Build & Price

Open 3D configurator
Outside diameter d1
Inch thread d2
Fine thread d2

Identification No.

Description of function

Zeichnung Funktionsbeschreibung GN 552

Breather caps GN 552 are used in oil reservoirs which must be ventilated.

If the oil is agitated, e.g. by a gear running in an oil bath or sump, there is the risk that the oil will leak. With properly aligned and shaped splash guards (see schematic drawing), these breather caps prevent the oil from leaking without substantially disrupting the ventilation / breathing process (pressure compensation).

The splash guards can be left out if their function is no longer needed or if a higher air flow rate is desired (coding 3 and 4).

A filter is used to protect the oil from outside pollution (dust). The filter is mounted behind the splash guards to ensure it makes no contact with the oil and becomes saturated by capillary effect.

For a very high air flow rate (the level of the oil reservoir changing quickly), Breather Caps GN 663 should be used.

Drawing Air flow rate GN 552 Drawing Air flow rate1 GN 552

Air flow rate [l/min] in reliance on the pressure
difference Δp [mbar] container / outside space
with filter (40 µm): Dash-dotted characteristic
without filter: Normal characteristic
Type without splash guards
(Coding 3 and 4)

Air flow rate [l/min] in reliance on the pressure
difference Δp [mbar] container / outside space
with filter (40 µm): Dash-dotted characteristic
without filter: Normal characteristic
Type with splash guards
(Coding 0, 1 and 2)

GN 109 Level markings / Special lengths (special order)

GN 109

Level markings and special lengths GN 109 for oil dipsticks are available for the standards shown above. The dipstick is shortened to the length l1 and the marking notches are milled in at l2 or l3 with the effect that they are easily visible. The maximum length l1 is given in the appropriate standard. The length specifications l1 to l3 refer to the contact surface without seal, with a tolerance of ±1 mm to be taken into account. For critical applications and depending on standard, the seal must be taken into consideration with a thickness of as much as 2 mm.
If required, more than 2 notches may be cut which are then specified by the appropriate details on the position
(l4 ... lx). Also, texts such as MAX / MIN may be laser-engraved in addition to or instead of the notches by submitting the
appropriate template.

The level markings / special lengths GN 109 are to be ordered as a separate item in shopping cart step 1 under note.

How to order GN 109

Selected Part (How to order)

Total (net)
plus VAT 0,72 €
gross 4,53 €
In stock
ELESA Code: 53937
Description: SFP.30-1/4+F
Weight: 0,012 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone +49 7723 6507 - 0
RoHS: Yes
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances).
Please note our order discounts.
With a total value (net) per order:
from 175,00 € -> 10 % discount
from 275,00 € -> 20 % discount
from 375,00 € -> 30 % discount

Surcharge for small volume purchases:
-> 15,00 Euro
for value of goods less than 25,00 €
-> 10,00 Euro
for value of goods from 25,00 to 50,00 €
All prices in accordance with our price list No. 55, valid from 1 September 2022, plus VAT only valid for Germany.

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Our service team is available from Monday to Friday between 7:00 AM and 5:30 PM: +49 7723 6507 - 0

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GN 552-31-G1/4-A-0GN 552-31-G1/4-A-1GN 552-31-G1/4-A-2GN 552-31-G1/4-A-3GN 552-31-G1/4-A-4GN 552-31-G1/4-B-0GN 552-31-G1/4-B-1GN 552-31-G1/4-B-2GN 552-31-G3/8-A-0GN 552-31-G3/8-A-1GN 552-31-G3/8-A-2GN 552-31-G3/8-A-3GN 552-31-G3/8-A-4GN 552-31-G3/8-B-0GN 552-31-G3/8-B-1GN 552-31-G3/8-B-2GN 552-31-M16x1,5-A-0GN 552-31-M16x1,5-A-1GN 552-31-M16x1,5-A-2GN 552-31-M16x1,5-A-3GN 552-31-M16x1,5-A-4GN 552-31-M16x1,5-B-0GN 552-31-M16x1,5-B-1GN 552-31-M16x1,5-B-2GN 552-31-M18x1,5-A-0GN 552-31-M18x1,5-A-1GN 552-31-M18x1,5-A-2GN 552-31-M18x1,5-A-3GN 552-31-M18x1,5-A-4GN 552-31-M18x1,5-B-0GN 552-31-M18x1,5-B-1GN 552-31-M18x1,5-B-2GN 552-31-G1/2-A-0GN 552-31-G1/2-A-1GN 552-31-G1/2-A-2GN 552-31-G1/2-A-3GN 552-31-G1/2-A-4GN 552-31-G1/2-B-0GN 552-31-G1/2-B-1GN 552-31-G1/2-B-2GN 552-31-M20x1,5-A-0GN 552-31-M20x1,5-A-1GN 552-31-M20x1,5-A-2GN 552-31-M20x1,5-A-3GN 552-31-M20x1,5-A-4GN 552-31-M20x1,5-B-0GN 552-31-M20x1,5-B-1GN 552-31-M20x1,5-B-2GN 552-31-M22x1,5-A-0GN 552-31-M22x1,5-A-1GN 552-31-M22x1,5-A-2GN 552-31-M22x1,5-A-3GN 552-31-M22x1,5-A-4GN 552-31-M22x1,5-B-0GN 552-31-M22x1,5-B-1GN 552-31-M22x1,5-B-2GN 552-42-G3/8-A-0GN 552-42-G3/8-A-1GN 552-42-G3/8-A-2GN 552-42-G3/8-A-3GN 552-42-G3/8-A-4GN 552-42-G1/2-A-0GN 552-42-G1/2-A-1GN 552-42-G1/2-A-2GN 552-42-G1/2-A-3GN 552-42-G1/2-A-4GN 552-42-G3/4-A-0GN 552-42-G3/4-A-1GN 552-42-G3/4-A-2GN 552-42-G3/4-A-3GN 552-42-G3/4-A-4GN 552-42-G3/4-B-0GN 552-42-G3/4-B-1GN 552-42-G3/4-B-2GN 552-42-G1-A-0GN 552-42-G1-A-1GN 552-42-G1-A-2GN 552-42-G1-A-3GN 552-42-G1-A-4GN 552-42-G1-B-0GN 552-42-G1-B-1GN 552-42-G1-B-2GN 552-57-G3/4-A-0GN 552-57-G3/4-A-1GN 552-57-G3/4-A-2GN 552-57-G3/4-A-3GN 552-57-G3/4-A-4GN 552-57-G1-A-0GN 552-57-G1-A-1GN 552-57-G1-A-2GN 552-57-G1-A-3GN 552-57-G1-A-4GN 552-57-G11/4-A-0GN 552-57-G11/4-A-1GN 552-57-G11/4-A-2GN 552-57-G11/4-A-3GN 552-57-G11/4-A-4GN 552-57-G11/4-B-0GN 552-57-G11/4-B-1GN 552-57-G11/4-B-2GN 552-57-G11/2-A-0GN 552-57-G11/2-A-1GN 552-57-G11/2-A-2GN 552-57-G11/2-A-3GN 552-57-G11/2-A-4GN 552-57-G11/2-B-0GN 552-57-G11/2-B-1

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