O-rings for NW/KF centering rings

SKU: VOR-B-KF16   |   Availability ⓘ

O-rings for NW/KF centering rings

SKU: VOR-B-KF16   |   Availability ⓘ
Size
Material
Pack Size
AU $19.00 Regular price

Taxes and shipping applied at checkout.

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Depending on pressure on the O-ring, environment and service temperature, O-rings need to be renewed to ensure leak-free seals. Use the O-rings to service the NW/KF connections on your vacuum systems.

Viton is well known for its excellent resistance to heat and to aggressive fuels and chemicals. Used for high vacuum applications, temperature range from -54°C to 250°C. Viton is a registered trademark of DuPont Performance Elastomers.

Silicone is a popular O-Ring which is commonly red in colour and is used for chemical applications. Made of elastomeric materials made from silicone, oxygen, hydrogen and carbon. Excellent material for static service at extreme (hot or cold) temperatures. Outstanding flex and fatigue life. Very good for ozone and UV radiation as well as for resistance to fungal and biological attack. Limitations: Avoid chlorinated solvents, aliphatic and aromatic hydrocarbons and petroleum oils. Silicones are generally very permeable to gases and have poor physical strength and abrasion resistance. Temperature Range from -85°C to 232°C. LPCVD/Oxidation, Dry Etch, Resist Stripping.

Buna-N, also known as Standard Nitrile, is used for non-critical and low vacuum applications, temperature range from -54°C to 150°C. Excellent resistance to petroleum-based oils and fuels, water and alcohols. Nitrile also has good resistance to acids and bases, except those with a strong oxidising effect. Limitations: Avoid highly polar solvents (Acetone, MEK, etc.) and direct exposure to ozone and sunlight.

Size ID [B] OD  Thickness [A]
KF16 18.5mm 29mm 5mm
KF25 28.5mm 37mm 5mm
KF40 41.5mm 50mm 5mm
KF50 55mm 65mm 5mm


O-ring Materials Comparison Table
Property Buna-N Viton ; Silicone
Common Name Nitrile Fluor Elastomere Silicone Rubber
Tear Resistance Good Good Good
Abrasive Resistance Good Good Poor
Ozone Resistance Poor Excellent Excellent
Weather Resistance Fair Excellent Excellent
Heat Resistance Fair Excellent Excellent
Chemical Resistance Fair Excellent Good
Oil Resistance Poor Excellent Poor
Acid Resistance
Fair
Excellent
Good
Alkali Resistance
Good
Good
Fair
Steam Resistance
Fair
Fair
Poor
Minimum Usable Temperature
-54°C
-54°C
-85°C
Maximum Usable Temperature
150°C
260°C
232°C
Color
Black
Black / Brown
Red
Impermeability
Fair
Good
Poor
Tensile Strength
Good
Good
Poor
Cost
Low
High
Medium

O-rings for locating rings

Updated: 19-06-2024
Code Size Material Pack Size Availability* Price (ex GST)
VOR-B-KF16 NW/KF16 Nitrile Pack/10 3 weeks AU $19.00
VOR-B-KF25 NW/KF25 Nitrile Pack/10 3 weeks AU $20.00
VOR-B-KF40 NW/KF40 Nitrile Pack/10 3 weeks AU $22.00
VOR-B-KF50 NW/KF50 Nitrile Pack/10 1 in stock AU $26.00
VOR-S-KF16 NW/KF16 Silicone Pack/10 3 weeks AU $26.00
VOR-S-KF25 NW/KF25 Silicone Pack/10 3 weeks AU $29.00
VOR-S-KF40 NW/KF40 Silicone Pack/10 3 weeks AU $43.00
VOR-S-KF50 NW/KF50 Silicone Pack/10 1 in stock AU $34.00
VTP92227-16V NW/KF 16 Viton Pack/10 3 weeks AU $41.00
VTP92227-25V NW/KF25 Viton Pack/10 3 weeks AU $58.00
VTP92227-40V NW/KF40 Viton Pack/10 3 weeks AU $52.00
VTP92227-50V NW/KF50 Viton Pack/10 3 weeks AU $70.00

* Availability Explanation

X weeks – the estimated lead time, based on the average time taken previously to fill orders from this particular supplier. Lead times are from when we receive your order until when we fill your order. For delivery times, please see shipping information below.

In Stock – Plenty of stock on the shelf, ready to ship.

No ETA – our supplier has advised they cannot provide an accurate ETA. Generally there is some issue with supply, and it may be more than 6 months.

REFUNDS AND RETURNS

Please ask prior to returning any goods.

Defective products should be returned to us for replacement or credit. It is best to contact support with as much detail as possible, including pictures, so we can quickly resolve the issue. ProSciTech Pty Ltd complies with the ACCC guidelines, available here: https://www.accc.gov.au/consumers/consumer-rights-guarantees/repair-replace-refund 

If you decide the item purchased does not suit your requirements, you may contact us to see if a return is possible. Some items may not be refunded, so please ask before purchase if you think a return may be necessary. The greater of $15 or 15% re-stocking charge  will be levied on materials returned due to an error on the part of the customer. We try to keep this charge minimal, however returns do have a cost to us.

SHIPPING INFORMATION

Shipping and Handling charges are $20 for Australian orders; free for orders over $200. 

In-stock items are generally sent same day. Orders are shipped shipped from Townsville, Queensland. Our couriers pick up from 2:30pm, so please place your order in plenty of time for processing and packing if you would like it sent same day. When items are not in stock, your order may be part-shipped. Items on back-order will be sent as soon as they become available.

ProSciTech will choose the courier for your order with consideration for the destination, value of parcel, weight and perishability of contents. It is our concern that our shipments reach you, our customer, rapidly and in good condition. Please contact us if you have any issues with a shipment and we will do our best to resolve it. Please keep in mind however, that our legal responsibility ends when goods are passed to the carrier.

Order Value Shipping and Handling charges
Greater than $200 - (exceptionally heavy or Dangerous Goods excluded). Free
Less than $200 $20
Express shipping $30

Delivery times:

Check your email for tracking details provided at time of shipping for updates of your parcel. We cannot guarantee delivery times, as this is outside of our control. The following are the delivery estimates as given by our couriers. 

Regular shipping
Queensland   1-3 business days 
Sydney   2-5 business days 

Melbourne, Adelaide, Hobart or Canberra 

 3-10 business days 

WA, NT and non-metro areas

 4-10 business days 
Express shipping
Australia wide   1-2 business days

Urgent Orders:

Please request "Express" if you would like us to upgrade your shipment to express delivery. Providing your order fits in a satchel and/or is under 1kg in weight, we will ship your order either DHL, TNT or Express Post. Larger or heavy orders need a quotation for additional freight costs.

Dangerous goods:

See the table on the page for DG shipment costs by road. Please specify when ordering if you require air service (this can be prohibitively expensive). Please request a quotation. We will charge at cost.
 

Shipping to New Zealand Destinations

Orders are now shipped 'receipted delivery'.

Charges:

Order Value Shipping and Handling charges
Greater than $200 - (exceptionally heavy or Dangerous Goods excluded). Free
Less than $200 $26 Minimum Charge

Heavy items (e.g. benchroll or large quantities of microscope slides) may require an additional freight charge - please ask for a quote.

DANGEROUS GOODS shipped to New Zealand: Dangerous goods will be air-freighted and the freight charge billed at cost. Typically, this will be about AUD $600AUD to New Zealand (Up to 2kg).

Delivery times: by air with signature on delivery, depending on courier, delivery can take 3-14 working days. Customs delays are unpredictable and can extend the delivery. Due to COVID19 delivery times have been extended through the couriers and are out of our control.

Shipping to Rest of World Destinations

Contact us for a quote for shipping. 

Delivery times: by air with signature on delivery, depending on courier, delivery can be 7-21 working days. Customs delays are unpredictable and can extend the delivery time. Due to COVID19 delivery times have been extended through the couriers and are out of our control.

DANGEROUS GOODS shipped outside Australia: Not available

GUARANTEE

All products are guaranteed as advertised. Defective products should be returned to us for replacement or credit. Please contact us prior to returning goods. 

We endeavour to provide accurate descriptions, illustrations, prices and stock availability, but errors and omissions are possible. All quotations are E&OE (Errors and Omissions Excepted) 

LIABILITY

All products are intended for laboratory applications only and the user assumes all responsibility involved in use and handling. We accept no liability for loss or damage resulting from the use or abuse of our products. 

At ProSciTech, we make it easy for you to get an accurate quote for the products you're interested in. Our automatic quote generates a formal quote, including shipping, and sends it to your inbox.

If you can see the price and you are within Australia, you can generate a quote at any time.


Creating a quote:

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If your quote has generated successfully, it will show the following message : Thank you for your quote request. You will receive your quote via email shortly.

If your quote has generated successfully, it will show the following message : Thank you for your quote request. You will receive your quote via email shortly.

Trouble Shooting

  1. You do not receive the quote
    Solution: If you received a message to say a quote has been sent, check your spam folder. If you have a very strict firewall, please email to ask the quote is sent direct.
  2. No discount applied
    Solution: Check the discount, as most discounts apply to online orders only.
  3. Incorrect freight charge (eg there is freight charged on an order over $200)
    Solution: check you are logged in and you have entered your shipping address.

For Manual Quotes:

In some cases, a manual quote may be necessary. This could be if the product doesn't have a price listed online, if you're located outside of Australia, or if your total order will exceed $1000.

To request a manual quote, simply click the "Request Quote" button and submit a support ticket with your shipping address and phone number. Alternatively, you can email us directly at support@proscitech.com. Our team will review your request and send you a quote as soon as possible, generally 1-2 days.